The Relational operators are some of the operators that are mostly used either in If Conditions or Loops. Relational operators in C Programming language are commonly used to check the relationship between two variables. If the relation is true, then it will return the value 1. Otherwise, it returns a value of 0.
The below table shows all the Relational Operators in C programming with examples.
| Relational Operators | Usage | Description | Example |
|---|---|---|---|
| > | a > b | a is greater than b | 7 > 3 returns true (1) |
| < | a < b | a is less than b | 7 < 3 returns false (0) |
| >= | a >= c | a is greater than or equal to c | 7 >= 3 returns true (1) |
| <= | a <= c | a is less than or equal to c | 7 <= 3 return false (0) |
| == | i == j | i is equal to j | 7 == 3 returns false (0) |
| != | i != j | i is not equal to j | 7 != 3 returns true(1) |
Relational Operators in C Example
This program helps you to understand Relational Operators practically. For this C Programming tutorial example, we are using two variables, a and b, and their values are 9 and 4. We are going to use these two variables to perform various relational operations.
#include <stdio.h>
int main()
{
int a = 9;
int b = 4;
printf(" a > b: %d \n", a > b);
printf("a >= b: %d \n", a >= b);
printf("a <= b: %d \n", a <= b);
printf("a < b: %d \n", a < b);
printf("a == b: %d \n", a == b);
printf("a != b: %d \n", a != b);
}
In this relational operators example, we checked a and b values against every one of it we have. Here one means TRUE and 0 means FALSE
C Relational Operators in If Condition
This Operators example helps you understand how relational operators in this Language are used in the if-else condition. For this example program, we are using two variables, x and y, and their values are 10 and 25.
We are going to use these two variables in the If Statement to check the condition using ==. However, you can use any of the relational operators in this programming language as the condition.
#include <stdio.h>
void main()
{
int x = 10;
int y = 25;
if (x == y)
{
printf(" x is equal to y \n" );
}
else
{
printf(" x is not equal to y \n" );
}
}
If x is exactly equal to y, the first printf statement will execute
printf(" x is equal to y \n" );
When x is not equal to y, the second c printf statement is executed.
printf(" x is not equal to y \n" );
Here, x is not equal to 25, so the Second statement is printed. Please try these relational operators in the For Loop, While loop, do while loop, and else if as well.