The following table shows all the relational or comparison operators supported by the C language. Assume variable x holds 21, y holds 10 and variable z holds 0 then.

Operator Name | Syntax | Description | Example |
---|---|---|---|

Equal to | x == y | Checks if the values of two operands are equal or not. If yes, then the condition becomes true. | z = (x == y); z = 0 |

Not Equal to | x != y | Checks if the values of two operands are equal or not. If the values are not equal, then the condition becomes true. | z = (x != y); z = 1 |

Greater than | x > y | Checks if the value of left operand is greater than the value of right operand. If yes, then the condition becomes true. | z = (x > y); z = 1 |

Less than | x < y | Checks if the value of left operand is less than the value of right operand. If yes, then the condition becomes true. | z = (x < y); z = 0 |

Greater than or equal to | x >= y | Checks if the value of left operand is greater than or equal to the value of right operand. If yes, then the condition becomes true. | z = (x >= y); z = 1 |

Less than or equal to | x <= y | Checks if the value of left operand is less than or equal to the value of right operand. If yes, then the condition becomes true. | z = (x<= y); z = 0 |

```
#include <stdio.h>
int main()
{
int x = 21;
int y = 10;
int z = 0;
printf("Relational operators demo\n");
printf("Value of x is %d\n", x );
printf("Value of y is %d\n", y );
printf("Value of z is %d\n", z );
z = (x == y);
printf("Equal to (z = (x == y)): %d\n",z);
z = (x != y);
printf("Not equal to (z = (x != y)): %d\n",z);
z = (x > y);
printf("Greater than (z = (x > y)): %d\n",z);
z = (x < y);
printf("Less than (z = (x < y)): %d\n",z);
z = (x >= y);
printf("Greater than or equal to (z = (x >= y)): %d\n",z);
z = (x <= y);
printf("Less than or eqaul to (z = (x <= y)): %d\n",z);
return 0;
}
```

The output of the above program would be:```
Relational operators demo
Value of x is 21
Value of y is 10
Value of z is 0
Equal to (z = (x == y)): 0
Not equal to (z = (x != y)): 1
Greater than (z = (x > y)): 1
Less than (z = (x < y)): 0
Greater than or equal to (z = (x >= y)): 1
Less than or eqaul to (z = (x <= y)): 0
```

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**Related topics:**

Overview of Operators in C | Arithmetic Operators in C | Logical Operators in C | Bitwise Operators in C | Compound Assignment Operators in C | Conditional Operators in C | Miscellaneous Operators in C | Operator Precedence and Associativity in C

**List of topics:**C Programming

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