Relational Operator

Relational operators are used to compare the value of two variables.

Operators

Operator	Use
==	Check value of 2 variable are equal
!=	Check value of 2 variable are equal or not
>	check is value is greater than
>=	check is value is greater than or equal to
<	check value is less than
<=	check value is less than or equal to

Example :

    #include <stdio.h>

    int main()
    {
    int a = 21;
    int b = 10;
    int c ;

    // == operator
    if( a == b )
    {
    printf("a is equal to b\n" );
    }
    else
    {
    printf("a is not equal to b\n" );
    }

    // < operator
    if ( a < b )
    {
    printf("a is less than b\n" );
    }
    else
    {
    printf("a is not less than b\n" );
    }

    // > operator
    if ( a > b )
    {
    printf("a is greater than b\n" );
    }
    else
    {
    printf("a is not greater than b\n" );
    }

    // Lets change value of a and b
    a = 5;
    b = 20;
    // <= operator
    if ( a <= b )
    {
    printf("a is either less than or equal to b\n" );
    }


    // >= operator
    if ( b >= a )
    {
    printf("b is either greater than or equal to b\n" );
    }

    return 0;
    }

Output :

    a is not equal to b
    a is not less than b
    a is greater than b
    a is either less than or equal to  b
    b is either greater than  or equal to b