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Equality Operators in C, C++ programming language

Last Updated : December 17, 2025

There are two operators which are known as Equality Operators:

1. Equal To Operator (==)
2. Not Equal To Operator (!=)

1) "Equal To" Operator (==)

It’s a binary operator and works on two operands, it returns 1 if value of both operands are equal else it returns 0.

Syntax

Operand1 == Operand2

Tip: There should be a space between operands and operators.

Example

In this example, we have two variables (operands for the operator) "a" and "b" and the value of "a" is "10" and value of "b" is also "10".

#include <stdio.h>

int main()
{
    int a=10;
    int b=10;
    
    int result;
    
    result = (a==b);
    
    printf("result: %d\n",result);
    
    return 0;
}

Output

result: 1

---

2) "Not Equal To" Operator (!=)

It’s a binary operator and works on two operands, it returns 1 if value of both operands are not equal else it returns 0.

Syntax

Operand1 != Operand2

Tip: There should be a space between operands and operators.

Example

In this example, we have two variables (operands for the operator) "a" and "b" and the value of "a" is "10" and value of "b" is also "10".

#include <stdio.h>

int main()
{
    int a=10;
    int b=10;
    
    int result;
    
    result = (a!=b);
    
    printf("result: %d\n",result);
    
    return 0;
}

Output

result: 0

Here is the list of C programs for your practices.

Some of the good programs based on Equality Operators with other relations operators:

• C program to validate date (Check date is valid or not).
• C program to design love calculator.
• Age Calculator (C program to calculate age).
• C program to design a TIC TAC TOE game.
• C program to design flying characters Screen Saver.

Equality Operators in C/C++ Exercise

Select the correct option to complete each statement about equality operators in C/C++ programming language.

1. Which operator is used to check whether two values are equal in C/C++? --Select-- == (equal to) = (assignment) != (not equal to)
2. What will be the result of the expression 5 == 10 in C/C++? --Select-- 0 (false) 1 (true) Compilation error
3. Which equality operator returns true when two operands are not equal? --Select-- != (not equal to) == (equal to) <= (less than or equal to)

Check Answers