define assignment operators in c

C Data Types

C operators.

• C Input and Output
• C Control Flow
• C Functions
• C Preprocessors

C File Handling

• C Cheatsheet

C Interview Questions

• C Programming Language Tutorial
• C Language Introduction
• Features of C Programming Language
• C Programming Language Standard
• C Hello World Program
• Compiling a C Program: Behind the Scenes
• Tokens in C
• Keywords in C

C Variables and Constants

• C Variables
• Constants in C
• Const Qualifier in C
• Different ways to declare variable as constant in C
• Scope rules in C
• Internal Linkage and External Linkage in C
• Global Variables in C
• Data Types in C
• Literals in C
• Escape Sequence in C
• Integer Promotions in C
• Character Arithmetic in C
• Type Conversion in C

C Input/Output

• Basic Input and Output in C
• Format Specifiers in C
• printf in C
• Scansets in C
• Formatted and Unformatted Input/Output functions in C with Examples
• Operators in C
• Arithmetic Operators in C
• Unary operators in C
• Relational Operators in C
• Bitwise Operators in C
• C Logical Operators

Assignment Operators in C

• Increment and Decrement Operators in C
• Conditional or Ternary Operator (?:) in C
• sizeof operator in C
• Operator Precedence and Associativity in C

C Control Statements Decision-Making

• Decision Making in C (if , if..else, Nested if, if-else-if )
• C - if Statement
• C if...else Statement
• C if else if ladder
• Switch Statement in C
• Using Range in switch Case in C
• while loop in C
• do...while Loop in C
• For Versus While
• Continue Statement in C
• Break Statement in C
• goto Statement in C
• User-Defined Function in C
• Parameter Passing Techniques in C
• Function Prototype in C
• How can I return multiple values from a function?
• main Function in C
• Implicit return type int in C
• Callbacks in C
• Nested functions in C
• Variadic functions in C
• _Noreturn function specifier in C
• Predefined Identifier __func__ in C
• C Library math.h Functions

C Arrays & Strings

• Properties of Array in C
• Multidimensional Arrays in C
• Initialization of Multidimensional Array in C
• Pass Array to Functions in C
• How to pass a 2D array as a parameter in C?
• What are the data types for which it is not possible to create an array?
• How to pass an array by value in C ?
• Strings in C
• Array of Strings in C
• What is the difference between single quoted and double quoted declaration of char array?
• C String Functions
• Pointer Arithmetics in C with Examples
• C - Pointer to Pointer (Double Pointer)
• Function Pointer in C
• How to declare a pointer to a function?
• Pointer to an Array | Array Pointer
• Difference between constant pointer, pointers to constant, and constant pointers to constants
• Pointer vs Array in C
• Dangling, Void , Null and Wild Pointers in C
• Near, Far and Huge Pointers in C
• restrict keyword in C

C User-Defined Data Types

• C Structures
• dot (.) Operator in C
• Structure Member Alignment, Padding and Data Packing
• Flexible Array Members in a structure in C
• Bit Fields in C
• Difference Between Structure and Union in C
• Anonymous Union and Structure in C
• Enumeration (or enum) in C

C Storage Classes

• Storage Classes in C
• extern Keyword in C
• Static Variables in C
• Initialization of static variables in C
• Static functions in C
• Understanding "volatile" qualifier in C | Set 2 (Examples)
• Understanding "register" keyword in C

C Memory Management

• Memory Layout of C Programs
• Dynamic Memory Allocation in C using malloc(), calloc(), free() and realloc()
• Difference Between malloc() and calloc() with Examples
• What is Memory Leak? How can we avoid?
• Dynamic Array in C
• How to dynamically allocate a 2D array in C?
• Dynamically Growing Array in C

C Preprocessor

• C Preprocessor Directives
• How a Preprocessor works in C?
• Header Files in C
• What’s difference between header files "stdio.h" and "stdlib.h" ?
• How to write your own header file in C?
• Macros and its types in C
• Interesting Facts about Macros and Preprocessors in C
• # and ## Operators in C
• How to print a variable name in C?
• Multiline macros in C
• Variable length arguments for Macros
• Branch prediction macros in GCC
• typedef versus #define in C
• Difference between #define and const in C?
• Basics of File Handling in C
• C fopen() function with Examples
• EOF, getc() and feof() in C
• fgets() and gets() in C language
• fseek() vs rewind() in C
• What is return type of getchar(), fgetc() and getc() ?
• Read/Write Structure From/to a File in C
• C Program to print contents of file
• C program to delete a file
• C Program to merge contents of two files into a third file
• What is the difference between printf, sprintf and fprintf?
• Difference between getc(), getchar(), getch() and getche()

Miscellaneous

• time.h header file in C with Examples
• Input-output system calls in C | Create, Open, Close, Read, Write
• Signals in C language
• Program error signals
• Socket Programming in C
• _Generics Keyword in C
• Multithreading in C
• C Programming Interview Questions (2024)
• Commonly Asked C Programming Interview Questions | Set 1
• Commonly Asked C Programming Interview Questions | Set 2
• Commonly Asked C Programming Interview Questions | Set 3

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:

Please Login to comment...

• C-Operators
• cpp-operator
• 10 Best Todoist Alternatives in 2024 (Free)
• How to Get Spotify Premium Free Forever on iOS/Android
• Yahoo Acquires Instagram Co-Founders' AI News Platform Artifact
• OpenAI Introduces DALL-E Editor Interface
• Top 10 R Project Ideas for Beginners in 2024

Improve your Coding Skills with Practice

What kind of Experience do you want to share?

• C Programming Tutorial
• C - Overview
• C - Features
• C - History
• C - Environment Setup
• C - Program Structure
• C - Hello World
• C - Compilation Process
• C - Comments
• C - Keywords
• C - Identifiers
• C - User Input
• C - Basic Syntax
• C - Data Types
• C - Variables
• C - Integer Promotions
• C - Type Conversion
• C - Constants
• C - Literals
• C - Escape sequences
• C - Format Specifiers
• C - Storage Classes
• C - Operators
• C - Decision Making
• C - if statement
• C - if...else statement
• C - nested if statements
• C - switch statement
• C - nested switch statements
• C - While loop
• C - Functions
• C - Main Functions
• C - Return Statement
• C - Scope Rules
• C - Properties of Array
• C - Multi-Dimensional Arrays
• C - Passing Arrays to Function
• C - Return Array from Function
• C - Variable Length Arrays
• C - Pointers
• C - Pointer Arithmetics
• C - Passing Pointers to Functions
• C - Strings
• C - Array of Strings
• C - Structures
• C - Structures and Functions
• C - Arrays of Structures
• C - Pointers to Structures
• C - Self-Referential Structures
• C - Nested Structures
• C - Bit Fields
• C - Typedef
• C - Input & Output
• C - File I/O
• C - Preprocessors
• C - Header Files
• C - Type Casting
• C - Error Handling
• C - Recursion
• C - Variable Arguments
• C - Memory Management
• C - Command Line Arguments
• C Programming Resources
• C - Questions & Answers
• C - Quick Guide
• C - Useful Resources
• C - Discussion
• Selected Reading
• UPSC IAS Exams Notes
• Developer's Best Practices
• Questions and Answers
• Effective Resume Writing
• HR Interview Questions
• Computer Glossary

Assignment Operators in C

In C, 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 = 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 −

Simple assignment operator (=)

The = operator is the most frequently used operator in C. As per 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.

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 produces the following result −

This browser is no longer supported.

Upgrade to Microsoft Edge to take advantage of the latest features, security updates, and technical support.

C Assignment Operators

• 6 contributors

An assignment operation assigns the value of the right-hand operand to the storage location named by the left-hand operand. Therefore, the left-hand operand of an assignment operation must be a modifiable l-value. After the assignment, an assignment expression has the value of the left operand but isn't an l-value.

assignment-expression :   conditional-expression   unary-expression assignment-operator assignment-expression

assignment-operator : one of   = *= /= %= += -= <<= >>= &= ^= |=

The assignment operators in C can both transform and assign values in a single operation. C provides the following assignment operators:

In assignment, the type of the right-hand value is converted to the type of the left-hand value, and the value is stored in the left operand after the assignment has taken place. The left operand must not be an array, a function, or a constant. The specific conversion path, which depends on the two types, is outlined in detail in Type Conversions .

• Assignment Operators

Was this page helpful?

Coming soon: Throughout 2024 we will be phasing out GitHub Issues as the feedback mechanism for content and replacing it with a new feedback system. For more information see: https://aka.ms/ContentUserFeedback .

Submit and view feedback for

Additional resources

PrepBytes Blog

ONE-STOP RESOURCE FOR EVERYTHING RELATED TO CODING

Sign in to your account

Forgot your password?

Login via OTP

We will send you an one time password on your mobile number

An OTP has been sent to your mobile number please verify it below

Register with PrepBytes

Assignment operator in c.

Last Updated on June 23, 2023 by Prepbytes

This type of operator is employed for transforming and assigning values to variables within an operation. In an assignment operation, the right side represents a value, while the left side corresponds to a variable. It is essential that the value on the right side has the same data type as the variable on the left side. If this requirement is not fulfilled, the compiler will issue an error.

What is Assignment Operator in C language?

In C, the assignment operator serves the purpose of assigning a value to a variable. It is denoted by the equals sign (=) and plays a vital role in storing data within variables for further utilization in code. When using the assignment operator, the value present on the right-hand side is assigned to the variable on the left-hand side. This fundamental operation allows developers to store and manipulate data effectively throughout their programs.

Example of Assignment Operator in C

For example, consider the following line of code:

Types of Assignment Operators in C

Here is a list of the assignment operators that you can find in the C language:

Simple assignment operator (=): This is the basic assignment operator, which assigns the value on the right-hand side to the variable on the left-hand side.

Addition assignment operator (+=): This operator adds the value on the right-hand side to the variable on the left-hand side and assigns the result back to the variable.

x += 3; // Equivalent to x = x + 3; (adds 3 to the current value of "x" and assigns the result back to "x")

Subtraction assignment operator (-=): This operator subtracts the value on the right-hand side from the variable on the left-hand side and assigns the result back to the variable.

x -= 4; // Equivalent to x = x – 4; (subtracts 4 from the current value of "x" and assigns the result back to "x")

* Multiplication assignment operator ( =):** This operator multiplies the value on the right-hand side with the variable on the left-hand side and assigns the result back to the variable.

x = 2; // Equivalent to x = x 2; (multiplies the current value of "x" by 2 and assigns the result back to "x")

Division assignment operator (/=): This operator divides the variable on the left-hand side by the value on the right-hand side and assigns the result back to the variable.

x /= 2; // Equivalent to x = x / 2; (divides the current value of "x" by 2 and assigns the result back to "x")

Bitwise AND assignment (&=): The bitwise AND assignment operator "&=" performs a bitwise AND operation between the value on the left-hand side and the value on the right-hand side. It then assigns the result back to the left-hand side variable.

x &= 3; // Binary: 0011 // After bitwise AND assignment: x = 1 (Binary: 0001)

Bitwise OR assignment (|=): The bitwise OR assignment operator "|=" performs a bitwise OR operation between the value on the left-hand side and the value on the right-hand side. It then assigns the result back to the left-hand side variable.

x |= 3; // Binary: 0011 // After bitwise OR assignment: x = 7 (Binary: 0111)

Bitwise XOR assignment (^=): The bitwise XOR assignment operator "^=" performs a bitwise XOR operation between the value on the left-hand side and the value on the right-hand side. It then assigns the result back to the left-hand side variable.

x ^= 3; // Binary: 0011 // After bitwise XOR assignment: x = 6 (Binary: 0110)

Left shift assignment (<<=): The left shift assignment operator "<<=" shifts the bits of the value on the left-hand side to the left by the number of positions specified by the value on the right-hand side. It then assigns the result back to the left-hand side variable.

x <<= 2; // Binary: 010100 (Shifted left by 2 positions) // After left shift assignment: x = 20 (Binary: 10100)

Right shift assignment (>>=): The right shift assignment operator ">>=" shifts the bits of the value on the left-hand side to the right by the number of positions specified by the value on the right-hand side. It then assigns the result back to the left-hand side variable.

x >>= 2; // Binary: 101 (Shifted right by 2 positions) // After right shift assignment: x = 5 (Binary: 101)

Conclusion The assignment operator in C, denoted by the equals sign (=), is used to assign a value to a variable. It is a fundamental operation that allows programmers to store data in variables for further use in their code. In addition to the simple assignment operator, C provides compound assignment operators that combine arithmetic or bitwise operations with assignment, allowing for concise and efficient code.

FAQs related to Assignment Operator in C

Q1. Can I assign a value of one data type to a variable of another data type? In most cases, assigning a value of one data type to a variable of another data type will result in a warning or error from the compiler. It is generally recommended to assign values of compatible data types to variables.

Q2. What is the difference between the assignment operator (=) and the comparison operator (==)? The assignment operator (=) is used to assign a value to a variable, while the comparison operator (==) is used to check if two values are equal. It is important not to confuse these two operators.

Q3. Can I use multiple assignment operators in a single statement? No, it is not possible to use multiple assignment operators in a single statement. Each assignment operator should be used separately for assigning values to different variables.

Q4. Are there any limitations on the right-hand side value of the assignment operator? The right-hand side value of the assignment operator should be compatible with the data type of the left-hand side variable. If the data types are not compatible, it may lead to unexpected behavior or compiler errors.

Q5. Can I assign the result of an expression to a variable using the assignment operator? Yes, it is possible to assign the result of an expression to a variable using the assignment operator. For example, x = y + z; assigns the sum of y and z to the variable x.

Q6. What happens if I assign a value to an uninitialized variable? Assigning a value to an uninitialized variable will initialize it with the assigned value. However, it is considered good practice to explicitly initialize variables before using them to avoid potential bugs or unintended behavior.

Leave a Reply Cancel reply

Your email address will not be published. Required fields are marked *

Save my name, email, and website in this browser for the next time I comment.

• Linked List
• Segment Tree
• Backtracking
• Dynamic Programming
• Greedy Algorithm
• Operating System
• Company Placement
• Interview Tips
• General Interview Questions
• Data Structure
• Other Topics
• Computational Geometry
• Game Theory

Related Post

Null character in c, ackermann function in c, median of two sorted arrays of different size in c, number is palindrome or not in c, implementation of queue using linked list in c, c program to replace a substring in a string.

cppreference.com

Assignment operators.

Assignment operators modify the value of the object.

[ edit ] Definitions

Copy assignment replaces the contents of the object a with a copy of the contents of b ( b is not modified). For class types, this is performed in a special member function, described in copy assignment operator .

For non-class types, copy and move assignment are indistinguishable and are referred to as direct assignment .

Compound assignment replace the contents of the object a with the result of a binary operation between the previous value of a and the value of b .

[ edit ] Assignment operator syntax

The assignment expressions have the form

• ↑ target-expr must have higher precedence than an assignment expression.
• ↑ new-value cannot be a comma expression, because its precedence is lower.

[ edit ] Built-in simple assignment operator

For the built-in simple assignment, the object referred to by target-expr is modified by replacing its value with the result of new-value . target-expr must be a modifiable lvalue.

The result of a built-in simple assignment is an lvalue of the type of target-expr , referring to target-expr . If target-expr is a bit-field , the result is also a bit-field.

[ edit ] Assignment from an expression

If new-value is an expression, it is implicitly converted to the cv-unqualified type of target-expr . When target-expr is a bit-field that cannot represent the value of the expression, the resulting value of the bit-field is implementation-defined.

If target-expr and new-value identify overlapping objects, the behavior is undefined (unless the overlap is exact and the type is the same).

In overload resolution against user-defined operators , for every type T , the following function signatures participate in overload resolution:

For every enumeration or pointer to member type T , optionally volatile-qualified, the following function signature participates in overload resolution:

For every pair A1 and A2 , where A1 is an arithmetic type (optionally volatile-qualified) and A2 is a promoted arithmetic type, the following function signature participates in overload resolution:

[ edit ] Built-in compound assignment operator

The behavior of every built-in compound-assignment expression target-expr   op   =   new-value is exactly the same as the behavior of the expression target-expr   =   target-expr   op   new-value , except that target-expr is evaluated only once.

The requirements on target-expr and new-value of built-in simple assignment operators also apply. Furthermore:

• For + = and - = , the type of target-expr must be an arithmetic type or a pointer to a (possibly cv-qualified) completely-defined object type .
• For all other compound assignment operators, the type of target-expr must be an arithmetic type.

In overload resolution against user-defined operators , for every pair A1 and A2 , where A1 is an arithmetic type (optionally volatile-qualified) and A2 is a promoted arithmetic type, the following function signatures participate in overload resolution:

For every pair I1 and I2 , where I1 is an integral type (optionally volatile-qualified) and I2 is a promoted integral type, the following function signatures participate in overload resolution:

For every optionally cv-qualified object type T , the following function signatures participate in overload resolution:

[ edit ] Example

Possible output:

[ edit ] Defect reports

The following behavior-changing defect reports were applied retroactively to previously published C++ standards.

[ edit ] See also

Operator precedence

Operator overloading

• Recent changes
• Offline version
• What links here
• Related changes
• Upload file
• Special pages
• Printable version
• Permanent link
• Page information
• In other languages
• This page was last modified on 25 January 2024, at 22:41.
• This page has been accessed 410,142 times.
• Privacy policy
• About cppreference.com
• Disclaimers

• school Campus Bookshelves
• menu_book Bookshelves
• perm_media Learning Objects
• login Login
• how_to_reg Request Instructor Account
• hub Instructor Commons
• Download Page (PDF)
• Download Full Book (PDF)
• Periodic Table
• Physics Constants
• Scientific Calculator
• Reference & Cite
• Tools expand_more
• Readability

selected template will load here

This action is not available.

4.6: Assignment Operator

• Last updated
• Save as PDF
• Page ID 29038

• Patrick McClanahan
• San Joaquin Delta College

Assignment Operator

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 C++ programming language the symbol used 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.

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.

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 assigned to the variable named: total_cousins.

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.

As we have seen, assignment operators are used to 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:

• “=” : This is the simplest assignment operator, which was discussed above. This operator is used to assign the value on the right to the variable on the left. For example: a = 10; b = 20; ch = 'y';

If initially the value 5 is stored in the variable a,  then:  (a += 6) is equal to 11.  (the same as: a = a + 6)

If initially value 8 is stored in the variable a, then (a -= 6) is equal to  2. (the same as a = a - 6)

If initially value 5 is stored in the variable a,, then (a *= 6) is equal to 30. (the same as a = a * 6)

If initially value 6 is stored in the variable a, then (a /= 2) is equal to 3. (the same as a = a / 2)

Below example illustrates the various Assignment Operators:

Definitions

 Adapted from:  "Assignment Operator"  by  Kenneth Leroy Busbee , (Download for free at http://cnx.org/contents/[email protected] ) is licensed under  CC BY 4.0

Learn C practically and Get Certified .

Popular Tutorials

Popular examples, reference materials, learn c interactively, c introduction.

• Keywords & Identifier
• Variables & Constants
• C Data Types
• C Input/Output
• C Operators
• C Introduction Examples

C Flow Control

• C if...else
• C while Loop
• C break and continue
• C switch...case
• C Programming goto
• Control Flow Examples

C Functions

• C Programming Functions
• C User-defined Functions
• C Function Types
• C Recursion
• C Storage Class
• C Function Examples
• C Programming Arrays
• C Multi-dimensional Arrays
• C Arrays & Function
• C Programming Pointers
• C Pointers & Arrays
• C Pointers And Functions
• C Memory Allocation
• Array & Pointer Examples

C Programming Strings

• C Programming String
• C String Functions
• C String Examples

Structure And Union

• C Structure
• C Struct & Pointers
• C Struct & Function
• C struct Examples

C Programming Files

• C Files Input/Output
• C Files Examples

Additional Topics

• C Enumeration
• C Preprocessors
• C Standard Library
• C Programming Examples

Bitwise Operators in C Programming

C Precedence And Associativity Of Operators

• Compute Quotient and Remainder
• Find the Size of int, float, double and char

C if...else Statement

• Make a Simple Calculator Using switch...case

C Programming Operators

An operator is a symbol that operates on a value or a variable. For example: + is an operator to perform addition.

C has a wide range of operators to perform various operations.

C Arithmetic Operators

An arithmetic operator performs mathematical operations such as addition, subtraction, multiplication, division etc on numerical values (constants and variables).

Example 1: Arithmetic Operators

The operators + , - and * computes addition, subtraction, and multiplication respectively as you might have expected.

In normal calculation, 9/4 = 2.25 . However, the output is 2 in the program.

It is because both the variables a and b are integers. Hence, the output is also an integer. The compiler neglects the term after the decimal point and shows answer 2 instead of 2.25 .

The modulo operator % computes the remainder. When a=9 is divided by b=4 , the remainder is 1 . The % operator can only be used with integers.

Suppose a = 5.0 , b = 2.0 , c = 5 and d = 2 . Then in C programming,

C Increment and Decrement Operators

C programming has two operators increment ++ and decrement -- to change the value of an operand (constant or variable) by 1.

Increment ++ increases the value by 1 whereas decrement -- decreases the value by 1. These two operators are unary operators, meaning they only operate on a single operand.

Example 2: Increment and Decrement Operators

Here, the operators ++ and -- are used as prefixes. These two operators can also be used as postfixes like a++ and a-- . Visit this page to learn more about how increment and decrement operators work when used as postfix .

C Assignment Operators

An assignment operator is used for assigning a value to a variable. The most common assignment operator is =

Example 3: Assignment Operators

C relational operators.

A relational operator checks the relationship between two operands. If the relation is true, it returns 1; if the relation is false, it returns value 0.

Relational operators are used in decision making and loops .

Example 4: Relational Operators

C logical operators.

An expression containing logical operator returns either 0 or 1 depending upon whether expression results true or false. Logical operators are commonly used in decision making in C programming .

Example 5: Logical Operators

Explanation of logical operator program

• (a == b) && (c > 5) evaluates to 1 because both operands (a == b) and (c > b) is 1 (true).
• (a == b) && (c < b) evaluates to 0 because operand (c < b) is 0 (false).
• (a == b) || (c < b) evaluates to 1 because (a = b) is 1 (true).
• (a != b) || (c < b) evaluates to 0 because both operand (a != b) and (c < b) are 0 (false).
• !(a != b) evaluates to 1 because operand (a != b) is 0 (false). Hence, !(a != b) is 1 (true).
• !(a == b) evaluates to 0 because (a == b) is 1 (true). Hence, !(a == b) is 0 (false).

C Bitwise Operators

During computation, mathematical operations like: addition, subtraction, multiplication, division, etc are converted to bit-level which makes processing faster and saves power.

Bitwise operators are used in C programming to perform bit-level operations.

Visit bitwise operator in C to learn more.

Other Operators

Comma operator.

Comma operators are used to link related expressions together. For example:

The sizeof operator

The sizeof is a unary operator that returns the size of data (constants, variables, array, structure, etc).

Example 6: sizeof Operator

Other operators such as ternary operator ?: , reference operator & , dereference operator * and member selection operator  ->  will be discussed in later tutorials.

Table of Contents

• Arithmetic Operators
• Increment and Decrement Operators
• Assignment Operators
• Relational Operators
• Logical Operators
• sizeof Operator

Video: Arithmetic Operators in C

Sorry about that.

Related Tutorials