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Kenneth Leroy Busbee

An assignment statement sets and/or re-sets the value stored in the storage location(s) denoted by a variable name; in other words, it copies a value into the variable. [1]

The assignment operator allows us to change the value of a modifiable data object (for beginning programmers this typically means a variable). It is associated with the concept of moving a value into the storage location (again usually a variable). Within most programming languages the symbol used for assignment is the equal symbol. But bite your tongue, when you see the = symbol you need to start thinking: assignment. The assignment operator has two operands. The one to the left of the operator is usually an identifier name for a variable. The one to the right of the operator is a value.

Simple Assignment

The value 21 is moved to the memory location for the variable named: age. Another way to say it: age is assigned the value 21.

Assignment with an Expression

The item to the right of the assignment operator is an expression. The expression will be evaluated and the answer is 14. The value 14 would be assigned to the variable named: total_cousins.

Assignment with Identifier Names in the Expression

The expression to the right of the assignment operator contains some identifier names. The program would fetch the values stored in those variables; add them together and get a value of 44; then assign the 44 to the total_students variable.

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  • Assignment Statement

An Assignment statement is a statement that is used to set a value to the variable name in a program .

Assignment statement allows a variable to hold different types of values during its program lifespan. Another way of understanding an assignment statement is, it stores a value in the memory location which is denoted by a variable name.

Assignment Statement Method

The symbol used in an assignment statement is called as an operator . The symbol is ‘=’ .

Note: The Assignment Operator should never be used for Equality purpose which is double equal sign ‘==’.

The Basic Syntax of Assignment Statement in a programming language is :

variable = expression ;

variable = variable name

expression = it could be either a direct value or a math expression/formula or a function call

Few programming languages such as Java, C, C++ require data type to be specified for the variable, so that it is easy to allocate memory space and store those values during program execution.

data_type variable_name = value ;

In the above-given examples, Variable ‘a’ is assigned a value in the same statement as per its defined data type. A data type is only declared for Variable ‘b’. In the 3 rd line of code, Variable ‘a’ is reassigned the value 25. The 4 th line of code assigns the value for Variable ‘b’.

Assignment Statement Forms

This is one of the most common forms of Assignment Statements. Here the Variable name is defined, initialized, and assigned a value in the same statement. This form is generally used when we want to use the Variable quite a few times and we do not want to change its value very frequently.

Tuple Assignment

Generally, we use this form when we want to define and assign values for more than 1 variable at the same time. This saves time and is an easy method. Note that here every individual variable has a different value assigned to it.

(Code In Python)

Sequence Assignment

(Code in Python)

Multiple-target Assignment or Chain Assignment

In this format, a single value is assigned to two or more variables.

Augmented Assignment

In this format, we use the combination of mathematical expressions and values for the Variable. Other augmented Assignment forms are: &=, -=, **=, etc.

Browse more Topics Under Data Types, Variables and Constants

  • Concept of Data types
  • Built-in Data Types
  • Constants in Programing Language 
  • Access Modifier
  • Variables of Built-in-Datatypes
  • Declaration/Initialization of Variables
  • Type Modifier

Few Rules for Assignment Statement

Few Rules to be followed while writing the Assignment Statements are:

  • Variable names must begin with a letter, underscore, non-number character. Each language has its own conventions.
  • The Data type defined and the variable value must match.
  • A variable name once defined can only be used once in the program. You cannot define it again to store other types of value.
  • If you assign a new value to an existing variable, it will overwrite the previous value and assign the new value.

FAQs on Assignment Statement

Q1. Which of the following shows the syntax of an  assignment statement ?

  • variablename = expression ;
  • expression = variable ;
  • datatype = variablename ;
  • expression = datatype variable ;

Answer – Option A.

Q2. What is an expression ?

  • Same as statement
  • List of statements that make up a program
  • Combination of literals, operators, variables, math formulas used to calculate a value
  • Numbers expressed in digits

Answer – Option C.

Q3. What are the two steps that take place when an  assignment statement  is executed?

  • Evaluate the expression, store the value in the variable
  • Reserve memory, fill it with value
  • Evaluate variable, store the result
  • Store the value in the variable, evaluate the expression.

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In AP Computer Science A

An assignment is the act of giving a value to a variable in programming. It involves storing information into memory locations so it can be accessed and manipulated later.

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Related terms

variable declaration : The act of creating and defining variables before assigning them values.

arithmetic operators (+,-,*,/,%) : Symbols used to perform mathematical calculations during assignments.

compound assignment operators (+=,-=,*=,/=,%=) : Shortened versions of arithmetic operators combined with assignment, allowing for concise variable updates.

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Operators are special symbols that perform operations on variables and values. For example,

Here, + is an operator that adds two numbers: 5 and 6 .

  • Types of Python Operators

Here's a list of different types of Python operators that we will learn in this tutorial.

  • Arithmetic Operators
  • Assignment Operators
  • Comparison Operators
  • Logical Operators
  • Bitwise Operators
  • Special Operators

1. Python Arithmetic Operators

Arithmetic operators are used to perform mathematical operations like addition, subtraction, multiplication, etc. For example,

Here, - is an arithmetic operator that subtracts two values or variables.

Operator Operation Example
Addition
Subtraction
Multiplication
Division
Floor Division
Modulo
Power

Example 1: Arithmetic Operators in Python

In the above example, we have used multiple arithmetic operators,

  • + to add a and b
  • - to subtract b from a
  • * to multiply a and b
  • / to divide a by b
  • // to floor divide a by b
  • % to get the remainder
  • ** to get a to the power b

2. Python Assignment Operators

Assignment operators are used to assign values to variables. For example,

Here, = is an assignment operator that assigns 5 to x .

Here's a list of different assignment operators available in Python.

Operator Name Example
Assignment Operator
Addition Assignment
Subtraction Assignment
Multiplication Assignment
Division Assignment
Remainder Assignment
Exponent Assignment

Example 2: Assignment Operators

Here, we have used the += operator to assign the sum of a and b to a .

Similarly, we can use any other assignment operators as per our needs.

3. Python Comparison Operators

Comparison operators compare two values/variables and return a boolean result: True or False . For example,

Here, the > comparison operator is used to compare whether a is greater than b or not.

Operator Meaning Example
Is Equal To gives us
Not Equal To gives us
Greater Than gives us
Less Than gives us
Greater Than or Equal To give us
Less Than or Equal To gives us

Example 3: Comparison Operators

Note: Comparison operators are used in decision-making and loops . We'll discuss more of the comparison operator and decision-making in later tutorials.

4. Python Logical Operators

Logical operators are used to check whether an expression is True or False . They are used in decision-making. For example,

Here, and is the logical operator AND . Since both a > 2 and b >= 6 are True , the result is True .

Operator Example Meaning
a b :
only if both the operands are
a b :
if at least one of the operands is
a :
if the operand is and vice-versa.

Example 4: Logical Operators

Note : Here is the truth table for these logical operators.

5. Python Bitwise operators

Bitwise operators act on operands as if they were strings of binary digits. They operate bit by bit, hence the name.

For example, 2 is 10 in binary, and 7 is 111 .

In the table below: Let x = 10 ( 0000 1010 in binary) and y = 4 ( 0000 0100 in binary)

Operator Meaning Example
Bitwise AND x & y = 0 ( )
Bitwise OR x | y = 14 ( )
Bitwise NOT ~x = -11 ( )
Bitwise XOR x ^ y = 14 ( )
Bitwise right shift x >> 2 = 2 ( )
Bitwise left shift x 0010 1000)

6. Python Special operators

Python language offers some special types of operators like the identity operator and the membership operator. They are described below with examples.

  • Identity operators

In Python, is and is not are used to check if two values are located at the same memory location.

It's important to note that having two variables with equal values doesn't necessarily mean they are identical.

Operator Meaning Example
if the operands are identical (refer to the same object)
if the operands are not identical (do not refer to the same object)

Example 4: Identity operators in Python

Here, we see that x1 and y1 are integers of the same values, so they are equal as well as identical. The same is the case with x2 and y2 (strings).

But x3 and y3 are lists. They are equal but not identical. It is because the interpreter locates them separately in memory, although they are equal.

  • Membership operators

In Python, in and not in are the membership operators. They are used to test whether a value or variable is found in a sequence ( string , list , tuple , set and dictionary ).

In a dictionary, we can only test for the presence of a key, not the value.

Operator Meaning Example
if value/variable is in the sequence
if value/variable is in the sequence

Example 5: Membership operators in Python

Here, 'H' is in message , but 'hello' is not present in message (remember, Python is case-sensitive).

Similarly, 1 is key, and 'a' is the value in dictionary dict1 . Hence, 'a' in y returns False .

  • Precedence and Associativity of operators in Python

Table of Contents

  • Introduction
  • Python Arithmetic Operators
  • Python Assignment Operators
  • Python Comparison Operators
  • Python Logical Operators
  • Python Bitwise operators
  • Python Special operators

Before we wrap up, let’s put your knowledge of Python operators to the test! Can you solve the following challenge?

Write a function to split the restaurant bill among friends.

  • Take the subtotal of the bill and the number of friends as inputs.
  • Calculate the total bill by adding 20% tax to the subtotal and then divide it by the number of friends.
  • Return the amount each friend has to pay, rounded off to two decimal places.

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Assignment Operators in C

In C language, the assignment operator stores a certain value in an already declared variable. A variable in C can be assigned the value in the form of a literal, another variable, or an expression.

The value to be assigned forms the right-hand operand, whereas the variable to be assigned should be the operand to the left of the " = " symbol, which is defined as a simple assignment operator in C.

In addition, C has several augmented assignment operators.

The following table lists the assignment operators supported by the C language −

Operator Description Example
= Simple assignment operator. Assigns values from right side operands to left side operand C = A + B will assign the value of A + B to C
+= Add AND assignment operator. It adds the right operand to the left operand and assign the result to the left operand. C += A is equivalent to C = C + A
-= Subtract AND assignment operator. It subtracts the right operand from the left operand and assigns the result to the left operand. C -= A is equivalent to C = C - A
*= Multiply AND assignment operator. It multiplies the right operand with the left operand and assigns the result to the left operand. C *= A is equivalent to C = C * A
/= Divide AND assignment operator. It divides the left operand with the right operand and assigns the result to the left operand. C /= A is equivalent to C = C / A
%= Modulus AND assignment operator. It takes modulus using two operands and assigns the result to the left operand. C %= A is equivalent to C = C % A
<<= Left shift AND assignment operator. C <<= 2 is same as C = C << 2
>>= Right shift AND assignment operator. C >>= 2 is same as C = C >> 2
&= Bitwise AND assignment operator. C &= 2 is same as C = C & 2
^= Bitwise exclusive OR and assignment operator. C ^= 2 is same as C = C ^ 2
|= Bitwise inclusive OR and assignment operator. C |= 2 is same as C = C | 2

Simple Assignment Operator (=)

The = operator is one of the most frequently used operators in C. As per the ANSI C standard, all the variables must be declared in the beginning. Variable declaration after the first processing statement is not allowed.

You can declare a variable to be assigned a value later in the code, or you can initialize it at the time of declaration.

You can use a literal, another variable, or an expression in the assignment statement.

Once a variable of a certain type is declared, it cannot be assigned a value of any other type. In such a case the C compiler reports a type mismatch error.

In C, the expressions that refer to a memory location are called "lvalue" expressions. A lvalue may appear as either the left-hand or right-hand side of an assignment.

On the other hand, the term rvalue refers to a data value that is stored at some address in memory. A rvalue is an expression that cannot have a value assigned to it which means an rvalue may appear on the right-hand side but not on the left-hand side of an assignment.

Variables are lvalues and so they may appear on the left-hand side of an assignment. Numeric literals are rvalues and so they may not be assigned and cannot appear on the left-hand side. Take a look at the following valid and invalid statements −

Augmented Assignment Operators

In addition to the = operator, C allows you to combine arithmetic and bitwise operators with the = symbol to form augmented or compound assignment operator. The augmented operators offer a convenient shortcut for combining arithmetic or bitwise operation with assignment.

For example, the expression "a += b" has the same effect of performing "a + b" first and then assigning the result back to the variable "a".

Run the code and check its output −

Similarly, the expression "a <<= b" has the same effect of performing "a << b" first and then assigning the result back to the variable "a".

Here is a C program that demonstrates the use of assignment operators in C −

When you compile and execute the above program, it will produce the following result −

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C++ functions, c++ classes, c++ data s tructures, c++ reference, c++ examples, c++ assignment operators, assignment operators.

Assignment operators are used to assign values to variables.

In the example below, we use the assignment operator ( = ) to assign the value 10 to a variable called x :

The addition assignment operator ( += ) adds a value to a variable:

A list of all assignment operators:

Operator Example Same As Try it
= x = 5 x = 5
+= x += 3 x = x + 3
-= x -= 3 x = x - 3
*= x *= 3 x = x * 3
/= x /= 3 x = x / 3
%= x %= 3 x = x % 3
&= x &= 3 x = x & 3
|= x |= 3 x = x | 3
^= x ^= 3 x = x ^ 3
>>= x >>= 3 x = x >> 3
<<= x <<= 3 x = x << 3

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What Is An Assignment In Computer Science

Table of Contents:

Assignment – This definition explains the meaning of Assignment and why it matters.

An assignment is a statement in computer programming that is used to set a value to a variable name. The operator used to do assignment is denoted with an equal sign (=). This operand works by assigning the value on the right-hand side of the operand to the operand on the left-hand side.

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What Is An Assignment In Computer Science

Assignment (computer science)

Certain use patterns are very common, and thus often have special syntax to support them. These are primarily syntactic sugar to reduce redundancy in the source code, but also assists readers of the code in understanding the programmer’s intent, and provides the compiler with a clue to possible optimization.

Today, probably the most generally used notation with this operation is x = expr (initially Superplan 1949–51, popularized by Fortran 1957 and C). The 2nd most generally used notation is(1) x := expr (initially ALGOL 1958, popularised by Pascal). A number of other notations will also be being used. In certain languages, the symbol used is considered being an operator (and therefore a job statement in general returns something). Other languages define assignment like a statement (and therefore it can’t be utilized within an expression).

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Fields laptop or computer scienceTips To Accomplish Information Technology Assignment Within An Excellent WayConclusionHere is definitely an understanding of all of the services that people provide to the students Information technology refers back to the study of computers and computing theories which includes the understanding of the practical and theoretical applications. Because of the collaboration of a lot of theories in one subject, it might be hard for the scholars to accomplish the given assignment promptly. A lot of the scholars have a tendency to choose the same subject following the completing their matrix studies due to scoring good marks but afterwards they understand that the particular discipline causes stress and burden inside them. Because this subject demands students to handle computational machines for this reason they always need expert guidance and help master the specific art of the identical subject. To obtain more understanding on a single you can approach any recognized assignment help website at the preferred time. Even you are able to acquire information technology assignment the aid of allassignmenthelp.

In computer programming, an assignment statement sets or re sets the value stored in the storage location(s) denoted by a variable name. In most imperative computer programming languages, assignment statements are one of the basic statements.…

In computer programming, an assignment statement sets or re-sets the value stored in the storage location(s) denoted by a variable name. In most imperative computer programming languages, assignment statements are one of the basic statements. Common notations for the assignment operator are = and :=.

Any assignment that changes an existing value (e. g. x := x + 1) is disallowed in purely functional languages. In functional programming, assignment is discouraged in favor of single assignment, also called name binding or initialization. Single assignment differs from assignment as described in this article in that it can only be made once, usually when the variable is created; no subsequent re-assignment is allowed. Once created by single assignment, named values are not variables but immutable objects.

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Networking: Computer networking handles the pc systems which contain numerous interconnected computers. This interconnected network of computers can be used to transfer information in one point to the other. Computer systems allow lengthy distance connections as well as discussing of information among various users.

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Adding Responsible CS to a Programming Assignment

The Proactive CARE template and the Evaluation Rubric were developed by Marty J. Wolf and Colleen Greer as part of the Mozilla Foundation Responsible Computer Science Challenge. These works are licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4. 0 International License.

Within this module we offer a template for adding components to just about any programming assignment. The constituents give students possibilities to mirror around the social and ethical impacts from the software they’re developing and just how they may be responsible for that change up the software is wearing people. Additionally, we offer evaluation rubrics you can use to judge student work. One is made to gauge students who aren’t familiar with reflective practices. Another is perfect for students who’ve engage responsible information technology reflection in a number of courses.

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Overview – The assignment operator allows us to change the value of a modifiable data object (for beginning programmers this typically means a variable). It is associated with the concept of moving a value into the storage location (again usually a variable). Within most programming languages the symbol used for assignment is the equal symbol. But bite your tongue, when you see the = symbol you need to start thinking: assignment. The assignment operator has two operands. The one to the left of the operator is usually an identifier name for a variable. The one to the right of the operator is a value.

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Episode 44 of my vlog series. I was very busy with studies this past week. So much so that I stopped vlogging daily and decided to vlog more occasionally during the week. In this episode, I’m working on a computer science assignment in java. Not necessarily hard, but challenging considering that I didn’t code on Java for the past 2 years. Stay tuned for part 2, where I should finish it and it’ll be a great success.

What Is An Assignment In Computer Science

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In computer programming, an assignment statement sets and/or re-sets the value stored in the storage location(s) denoted by a variable name; in other words, it copies a value into the variable. In most imperative programming languages, the assignment statement (or expression) is a fundamental construct. (en)

In computer programming, an assignment statement sets and/or re-sets the value stored in the storage location(s) denoted by a variable name; in other words, it copies a value into the variable. In most imperative programming languages, the assignment statement (or expression) is a fundamental construct. Today, the most commonly used notation for this operation is x = expr (originally Superplan 1949–51, popularized by Fortran 1957 and C). The second most commonly used notation is x := expr (originally ALGOL 1958, popularised by Pascal),. Many other notations are also in use. In some languages, the symbol used is regarded as an operator (meaning that the assignment statement as a whole returns a value). Other languages define assignment as a statement (meaning that it cannot be used in an expression). Assignments typically allow a variable to hold different values at different times during its life-span and scope. However, some languages (primarily strictly functional languages) do not allow that kind of “destructive” reassignment, as it might imply changes of non-local state.

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COMPUTER PROGRAMMING ASSIGNMENT 1 1ST YEARS

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1 QUESTION 1 Computer-programming. Computer-programming is definitely an science and art, of giving a mechanism or computer, the directions or instructions to follow along with to resolve an issue or accomplish an activity. QUESTION 2 Variations BETWEEN EVENT-DRIVEN AND OBJECT-ORIENTED AND PROCEDURAL PROGRAMMING LANGUAGES. To say the least, in the event-Driven the flow of Control is dependent upon occasions triggered through the user, (click of the mouse), although Object-Oriented Programming necessitates the programmer to pay attention to the objects the program may use to complete its goal. Finally, in Procedural Oriented Programming, the programmer only focuses on the main tasks the program must perform step-by-step. The flow of control for that program is dependent upon occasions mostly triggered by users. That’s, execution is decided for instance with a user action for example click, keypress, or perhaps a message in the Operating-system (OS) or any other user. Visual Basics and Visual C++ are specifically made to facilitate event-driven programming and supply a built-in development atmosphere (IDE) that partly automates producing code.

Encyclopedia article about Assignment (computer science) by The Free Dictionary.

assignment statement – assignment statement(ə′sīn·mənt ‚stāt·mənt) (computer science) A statement in a computer program that assigns a value to a variable. McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc. assignment statementIn programming, a compiler directive that places a value into a variable. For example, counter=0 creates a variable named counter and fills it with zeros. The VARIABLE=VALUE syntax is common among programming languages. Copyright © 1981-2019 by The Computer Language Company Inc. All Rights reserved. THIS DEFINITION IS FOR PERSONAL USE ONLY. All other reproduction is strictly prohibited without permission from the publisher.

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Programming Assignments – Computer Science; Rutgers, The State University of New Jersey.

Please remember that the person whose work is copied is also considered responsible for violating academic integrity principles. Take special care to protect your files, directories, and systems appropriately, and be sure to discard printouts so they cannot be retrieved by others (e. g., do not discard printouts in public recycling or garbage bins until after the assignment due date is passed).

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The “+=” and the “-=” functions add or subtract integers together before assigning them to the variable. Therefore, exampleVariableTwo += 5; is actually the same as the statement exampleVariableTwo = exampleVariableTwo + 5;. exampleVariableTwo increases by a value of 3 as a result of the program because it adds 5 and subtracts 2 before printing.

Video advice: My Computer Science Projects/Assignments – First Year (Python & Java)

I just finished my first year of computer science so I decided to show you all of my projects! See all of my first year computer science projects and assignments and hear me talk about their difficulty and purpose. I also step through some of the code.

What Is An Assignment In Computer Science

What is an assignment in computer science example?

An assignment is a statement in computer programming that is used to set a value to a variable name . The operator used to do assignment is denoted with an equal sign (=). This operand works by assigning the value on the right-hand side of the operand to the operand on the left-hand side.

What does assignment mean in programming?

In order to change the data value stored in a variable , you use an operation called assignment. This causes the value to be copied into a memory location, overwriting what was in there before. Different values may be assigned to a variable at different times during the execution of a program.

What is assignment in Python?

An assignment statement evaluates the expression list (remember that this can be a single expression or a comma-separated list, the latter yielding a tuple) and assigns the single resulting object to each of the target lists, from left to right.

What is an assignment statement explain with an example?

An assignment statement gives a value to a variable . For example, x = 5; ... the variable may be a simple name, or an indexed location in an array, or a field (instance variable) of an object, or a static field of a class; and. the expression must result in a value that is compatible with the type of the variable .

What is an assignment in Java?

Assignment in Java is the process of giving a value to a primitive-type variable or giving an object reference to an object-type variable . The equals sign acts as assignment operator in Java, followed by the value to assign.

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There are different kinds of the operators, such as arithmetic, relational, bitwise, assignment, etc., in the C programming language. The assignment operator is used to assign the value, variable and function to another variable. Let's discuss the various types of the assignment operators such as =, +=, -=, /=, *= and %=.


It is the operator used to assign the right side operand or variable to the left side variable.

Let's create a program to use the simple assignment operator in C.

The operator is used to add the left side operand to the left operand and then assign results to the left operand.

Let's create a program to use the Plus and assign operator in C.

The operator is used to subtract the left operand with the right operand and then assigns the result to the left operand.

Let's create a program to use the Subtract and Assign (-=) operator in C.

The operator is used to multiply the left operand with the right operand and then assign result to the left operand.

Let's create a program to use the multiply and assign operator (*=) in C.

An operator is used between the left and right operands, which divides the first number by the second number to return the result in the left operand.

Let's create a program to use the divide and assign operator (/=) in C.

An operator used between the left operand and the right operand divides the first number (n1) by the second number (n2) and returns the remainder in the left operand.

Let's create a program to use the divide and assign operator (%=) in C.





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Online compiler.

Variable Assignment

To "assign" a variable means to symbolically associate a specific piece of information with a name. Any operations that are applied to this "name" (or variable) must hold true for any possible values. The assignment operator is the equals sign which SHOULD NEVER be used for equality, which is the double equals sign.

The '=' symbol is the assignment operator. Warning, while the assignment operator looks like the traditional mathematical equals sign, this is NOT the case. The equals operator is '=='

Design Pattern

To evaluate an assignment statement:

  • Evaluate the "right side" of the expression (to the right of the equal sign).
  • Once everything is figured out, place the computed value into the variables bucket.

We've already seen many examples of assignment. Assignment means: "storing a value (of a particular type) under a variable name" . Think of each assignment as copying the value of the righthand side of the expression into a "bucket" associated with the left hand side name!

Read this as, the variable called "name" is "assigned" the value computed by the expression to the right of the assignment operator ('=');

Now that you have seen some variables being assigned, tell me what the following code means?

The answer to above questions: the assignment means that lkjasdlfjlskdfjlksjdflkj is a variable (a really badly named one), but a variable none-the-less. jlkajdsf and lkjsdflkjsdf must also be variables. The sum of the two numbers held in jlkajdsf and lkjsdflkjsdf is stored in the variable lkjasdlfjlskdfjlksjdflkj.

Examples of builtin Data and Variables (and Constants)

For more info, use the "help" command: (e.g., help realmin);

Examples of using Data and Variable

Pattern to memorize, assignment pattern.

The assignment pattern creates a new variable, if this is the first time we have seen the "name", or, updates the variable to a new value!

Read the following code in English as: First, compute the value of the thing to the right of the assignment operator (the =). then store the computed value under the given name, destroying anything that was there before.

Or more concisely: assign the variable "name" the value computed by "right_hand_expression"

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What is the exact meaning of an assignment operator?

I assume when we declare int a ; a=10; , then the compiler takes r-value & put it in it's l-value. At that time the l-value always treated as a address in the memory location i.e. a or any other variable in assignment operation at the left hand side treated as (&variable) . So we are able to catch its address to put the r-value in it.

Is my assumption is right or wrong?If wrong, then what is basic idea behind it?

Jonathan Schneider's user avatar

  • "Container class" is a C++-specific term. –  Keith Thompson Commented Jul 17, 2014 at 16:06
  • I believe you are effectively correct, remember the compiler converts that into native machine code I would guess it's going to be a MOV instruction. It depends on what you mean by "container class", I assume you mean type. –  Elliott Frisch Commented Jul 17, 2014 at 16:08

3 Answers 3

You're making it more complicated than it needs to be. The language definition simply states:

An assignment operator stores a value in the object designated by the left operand.

(6.5.16, para 3).

The only general constraint is that the left operand be a modifiable lvalue. An lvalue can correspond to a register (which has no address) or an addressable memory location. Exactly how it happens is an implementation detail.

John Bode's user avatar

  • 1 Or, the lvalue might have no physical representation in the final program at all: the compiler might be able to short-cut all uses of that variable and assign the value directly to it's final destination. –  ams Commented Jul 17, 2014 at 16:49

An assignment operator has two operands. The left operand must be a "modifiable lvalue".

An "lvalue" is, roughly, an expression that designates an object.

(An "rvalue", as the C standard uses the term, is simply the value that results from evaluating an expression. The C standard defines the term, but rarely uses it. The usage is a bit inconsistent: an "lvalue" is an expression, but an "rvalue" is a value.)

The right operand is evaluated to yield a value. That value is then converted, if necessary, to the type of the left operand, and the result is stored in the object designated by the left operand.

Addresses are not required. For example, a variable defined with register has no address, but it can still be the target of an assignment.

If you want the gory details, see section 6.5.16 of the C standard (the link is to n1570.pdf , the most recent draft, a 1.7-megabyte PDF).

Keith Thompson's user avatar

  • in simple words the modifiable l-value is get replaced by new r-value is it ? –  SumS Commented Jul 17, 2014 at 16:25
  • @SumeetBajiraoGaikwad: Not really. An lvalue is not an object; it's an expression that designates an object. An rvalue (a term the C standard defines but rarely uses) is just the value of an expression. The value that results from evaluating the RHS is stored in the object designated by the LHS, replacing whatever value (if any) it previously had. –  Keith Thompson Commented Jul 17, 2014 at 16:29
  • @SumeetBajiraoGaikwad - No. The value in the lvalue is replaced. –  Hot Licks Commented Jul 17, 2014 at 16:29
  • @HotLicks: No. An lvalue is a kind of expression. There is no "value in the lvalue". There is a value of the object designated by the lvalue. –  Keith Thompson Commented Jul 17, 2014 at 16:32
  • @KeithThompson - Yeah, you can dance around the terminology a lot. The more precisely you try to define it, the harder it gets to understand. (But, yes, "designated" is probably the better term.) –  Hot Licks Commented Jul 17, 2014 at 16:36

The terms "lvalue" and "rvalue" come from being on the left and right of the = symbol and hence are self-reflexive definitions. (Ie, not real helpful.)

But the important point is that an rvalue must be able to produce a value (ie, finite pattern of bits), while an lvalue must be capable of being having assigned to it a similar value.

As such, an lvalue must ultimately represent a storage address or register or I/O port or something else (is there anything else?) that can be "written to". But this does not mean that the lvalue contains an address -- it merely represents the addressable entity in the compiler, and will be translated to "real" addressing info in the generated assembly. Ie, it's simply a name for something.

An rvalue, on the other hand, need not represent a "real thing", but can be a literal or some expression or call or whatever, so long as it produces a "value" when asked.

Hot Licks's user avatar

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meaning of assignment in programming

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HHS Announces Cost Savings for 64 Prescription Drugs Thanks to the Medicare Rebate Program Established by the Biden-Harris Administration’s Lower Cost Prescription Drug Law

Under President Biden’s Inflation Reduction Act, some people with Medicare will pay less for some Part B drugs if the drug’s price increased faster than the rate of inflation.

The U.S. Department of Health and Human Services (HHS), through the Centers for Medicare & Medicaid Services (CMS), today announced that some Medicare enrollees will pay less for 64 drugs available through Medicare Part B. The drugs will have a lowered Part B coinsurance rate from July 1, 2024 – September 30, 2024, since each drug company raised prices faster than the rate of inflation.  Over 750,000 people with Medicare use these drugs annually, which treat conditions such as osteoporosis, cancer, and infections. White House Domestic Policy Advisor Neera Tanden will announce the cost savings on these life-saving drugs in a keynote address on the Biden-Harris Administration’s focus on lowering costs today at the Center for American Progress.

“Without the Inflation Reduction Act, seniors were completely exposed to Big Pharma’s price hikes. Not anymore. Thanks to President Biden and the new Medicare inflation rebate program, seniors are protected and benefitting from lower Part B drug costs,” said White House Domestic Policy Advisor Neera Tanden. “The Biden-Harris Administration will continue fighting to bring down the cost of health care and prescription drugs for all Americans.”

“President Biden’s Medicare prescription drug rebate program is putting money back in the pockets of seniors and people with disabilities, said HHS Secretary Xavier Becerra. “President Biden made lowering prescription drug costs for Americans a top priority, and he is delivering on that promise. Our work is not complete, and we will continue to fight for lower health care costs for all Americans.”

Please find soundbites from HHS’ Chief Competition Officer, Stacy Sanders, here .

Because of President Biden’s lower cost prescription drug law, the Inflation Reduction Act, which established the Medicare Prescription Drug Inflation Rebate Program, some people with Medicare who use these drugs during this time period may save between $1 and $4,593 per day.

“Everyone should be able to afford their medication, and the Inflation Reduction Act continues to deliver on this goal to improve affordability,” said CMS Administrator Chiquita Brooks-LaSure. “Discouraging drug companies from price increases above the rate of inflation is a key part of this effort, and CMS continues to implement the law to bring savings to people with Medicare.”

Padcev, a medication used to treat advanced bladder cancer, is an example of a prescription drug with a price that has increased faster than the rate of inflation every quarter since the Medicare Part B inflation rebate program went into effect, resulting in lowered Part B coinsurances for seniors and others with Medicare. A beneficiary taking Padcev as part of their cancer treatment may have saved as much as $1,181 from April 1, 2023 through March 31, 2024, depending on their coverage and course of treatment. Another example, Crysvita, treats a rare genetic disorder that causes impaired growth, muscle weakness, and bone pain. A beneficiary taking Crysvita may have saved as much as $765 from July 1, 2023 through March 31, 2024 depending on their coverage and course of treatment.

The Medicare Prescription Drug Inflation Rebate Program is just one of the Inflation Reduction Act’s prescription drug provisions aimed at lowering drug costs. In addition to this program, the law expanded eligibility for full benefits under the Low-Income Subsidy program (LIS or “Extra Help”) under Medicare Part D at the beginning of this year. Nearly 300,000 people with low and modest incomes are now benefiting from the program’s expansion. A comprehensive public education campaign is underway to reach the more than three million people who are likely eligible for the program but not yet enrolled.

In addition, as of January 1, 2024, some people enrolled in Medicare Part D who have high drug costs have their annual out-of-pocket costs capped at about $3,500. In 2025, all people with Medicare Part D will benefit from a $2,000 cap on annual out-of-pocket prescription drug costs.

The Inflation Reduction Act requires drug companies to pay rebates to Medicare when prices increase faster than the rate of inflation for certain drugs. CMS intends to begin invoicing prescription drug companies for rebates owed to Medicare no later than fall 2025. The rebate amounts paid by drug companies will be deposited in the Federal Supplementary Medical Insurance Trust Fund, which will help ensure the long-term sustainability of the Medicare program for future generations.

For more information on the Medicare Prescription Drug Inflation Rebate Program visit, https://www.cms.gov/inflation-reduction-act-and-medicare/inflation-rebates-medicare

To view the fact sheet on the 64 Part B drugs with a coinsurance reduction for the quarter July 1, 2024 – September 30, 2024, visit, https://www.cms.gov/files/document/reduced-coinsurance-certain-part-b-rebatable-drugs-july-1-september-30-2024.pdf

More information and helpful resources about the Inflation Reduction Act and how it is helping to lower costs for people with Medicare can be found at LowerDrugCosts.gov .

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APOL 988 Dissertation Writing in Applied Apologetics II

  • Course Description

In this course, the doctoral candidate will compose the middle chapters of a dissertation based on the candidate’s research and organization of content.

For information regarding prerequisites for this course, please refer to the  Academic Course Catalog .

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*The information contained in our Course Guides is provided as a sample. Specific course curriculum and requirements for each course are provided by individual instructors each semester. Students should not use Course Guides to find and complete assignments, class prerequisites, or order books.

This course is the first course dedicated primarily to the writing of the dissertation for the PhD in Applied Apologetics. All assignments in this course are devoted to completing compelling drafts of both the introductory sections (introduction/statement of thesis/literature review) and first major portions of the body of the argument of the dissertation. Completion of this course should allow students to complete a major percentage of their dissertation project and prepare them for matriculation into the next phase of their dissertation writing.

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After reading the Syllabus and  Student Expectations , the student will complete the related checklist found in the Course Overview.

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Assignment Operators in C

meaning of assignment in programming

Assignment operators are used for assigning value to a variable. The left side operand of the assignment operator is a variable and right side operand of the assignment operator is a value. The value on the right side must be of the same data-type of the variable on the left side otherwise the compiler will raise an error.

Different types of assignment operators are shown below:

1. “=”: This is the simplest assignment operator. This operator is used to assign the value on the right to the variable on the left. Example:

2. “+=” : This operator is combination of ‘+’ and ‘=’ operators. This operator first adds the current value of the variable on left to the value on the right and then assigns the result to the variable on the left. Example:

If initially value stored in a is 5. Then (a += 6) = 11.

3. “-=” This operator is combination of ‘-‘ and ‘=’ operators. This operator first subtracts the value on the right from the current value of the variable on left and then assigns the result to the variable on the left. Example:

If initially value stored in a is 8. Then (a -= 6) = 2.

4. “*=” This operator is combination of ‘*’ and ‘=’ operators. This operator first multiplies the current value of the variable on left to the value on the right and then assigns the result to the variable on the left. Example:

If initially value stored in a is 5. Then (a *= 6) = 30.

5. “/=” This operator is combination of ‘/’ and ‘=’ operators. This operator first divides the current value of the variable on left by the value on the right and then assigns the result to the variable on the left. Example:

If initially value stored in a is 6. Then (a /= 2) = 3.

Below example illustrates the various Assignment Operators:

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  1. Assignment (computer science)

    Assignment (computer science) In computer programming, an assignment statement sets and/or re-sets the value stored in the storage location (s) denoted by a variable name; in other words, it copies a value into the variable. In most imperative programming languages, the assignment statement (or expression) is a fundamental construct.

  2. What is an Assignment?

    An assignment is a statement in computer programming that is used to set a value to a variable name. The operator used to do assignment is denoted with an equal sign (=). This operand works by assigning the value on the right-hand side of the operand to the operand on the left-hand side. It is possible for the same variable to hold different ...

  3. Assignment

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  4. Assignment Operators in Programming

    Assignment operators are used in programming to assign values to variables. We use an assignment operator to store and update data within a program. They enable programmers to store data in variables and manipulate that data. The most common assignment operator is the equals sign (=), which assigns the value on the right side of the operator to ...

  5. What exactly are C++ definitions, declarations and assignments?

    A declaration tells the compiler, or programmer that the function or variable exists. e.g. An assignment is when a variable has its value set, usually with the = operator. e.g. Actually I would consider "int var;" to be definition, "int var = 5;" is a combined def/ass.

  6. What are Assignment Statement: Definition, Assignment Statement ...

    Assignment Statement. An Assignment statement is a statement that is used to set a value to the variable name in a program. Assignment statement allows a variable to hold different types of values during its program lifespan. Another way of understanding an assignment statement is, it stores a value in the memory location which is denoted.

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  8. Assignment

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  9. Java: define terms initialization, declaration and assignment

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  10. Python Operators (With Examples)

    Example 2: Assignment Operators # assign 10 to a a = 10 # assign 5 to b b = 5 # assign the sum of a and b to a a += b # a = a + b print(a) # Output: 15. Here, we have used the += operator to assign the sum of a and b to a. Similarly, we can use any other assignment operators as per our needs.

  11. Assignment Operators in C

    Simple assignment operator. Assigns values from right side operands to left side operand. C = A + B will assign the value of A + B to C. +=. Add AND assignment operator. It adds the right operand to the left operand and assign the result to the left operand. C += A is equivalent to C = C + A. -=.

  12. Assignment Operators In C++

    In C++, the assignment operator forms the backbone of many algorithms and computational processes by performing a simple operation like assigning a value to a variable. It is denoted by equal sign ( = ) and provides one of the most basic operations in any programming language that is used to assign some value to the variables in C++ or in other ...

  13. What are Operators in Programming?

    Assignment Operators in Programming: Assignment operators in programming are used to assign values to variables. They are essential for storing and updating data within a program. ... Unary Operator is an operator that operates on a single operand, meaning it affects only one value or va. 2 min read. Program for Bitwise Operators in C, C++ ...

  14. What is Assignment Operator?

    An assignment operator is the operator used to assign a new value to a variable, property, event or indexer element in C# programming language. Assignment operators can also be used for logical operations such as bitwise logical operations or operations on integral operands and Boolean operands. Unlike in C++, assignment operators in C# cannot ...

  15. Assignment Operators in Python

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  16. C++ Assignment Operators

    Assignment Operators. Assignment operators are used to assign values to variables. In the example below, we use the assignment operator (=) to assign the value 10 to a variable called x: Example. int x = 10;

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    An assignment operation is a process in imperative programming in which different values are associated with a particular variable name as time passes. [1] The program, in such model, operates by changing its state using successive assignment statements. [2] [3] Primitives of imperative programming languages rely on assignment to do iteration. [4] At the lowest level, assignment is implemented ...

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    Assignment means: "storing a value (of a particular type) under a variable name". Think of each assignment as copying the value of the righthand side of the expression into a "bucket" associated with the left hand side name! Read this as, the variable called "name" is "assigned" the value computed by the expression to the right of the ...

  22. What is the exact meaning of an assignment operator?

    The language definition simply states: An assignment operator stores a value in the object designated by the left operand. (6.5.16, para 3). The only general constraint is that the left operand be a modifiable lvalue. An lvalue can correspond to a register (which has no address) or an addressable memory location.

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