C Comparison Operators

In C, comparison operators are used to compare two values. These operators return a boolean value: true (1) if the comparison is correct, or false (0) otherwise. Comparison operators are commonly used in conditional statements like if and loops.

List of Comparison Operators

Operator Name	Operator Symbol	Description
Equal-To	`==`	Returns `true` if both operands are equal.
Not-Equal	`!=`	Returns `true` if both operands are not equal.
Greater-Than	`>`	Returns `true` if the left operand is greater than the right operand.
Less-Than	`<`	Returns `true` if the left operand is less than the right operand.
Greater-Than or Equal-To	`>=`	Returns `true` if the left operand is greater than or equal to the right operand.
Less-Than or Equal-To	`<=`	Returns `true` if the left operand is less than or equal to the right operand.

Examples of Comparison Operators

1. Using Equal-To (`==`) Operator

In this example, we will compare two integers using the Equal-To operator.

main.c

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#include <stdio.h>

int main() {
    int a = 10, b = 10;

    if (a == b) {
        printf("Both numbers are equal.\n");
    } else {
        printf("Numbers are not equal.\n");
    }

    return 0;
}

Output:

Both numbers are equal.

2. Using Not-Equal (`!=`) Operator

In this example, we will compare two integers using the Not-Equal operator.

main.c

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#include <stdio.h>

int main() {
    int x = 15, y = 20;

    if (x != y) {
        printf("Numbers are not equal.\n");
    } else {
        printf("Numbers are equal.\n");
    }

    return 0;
}

Output:

Numbers are not equal.

3. Using Greater-Than (`>`) Operator

In this example, we will check if one number is greater than another.

main.c

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#include <stdio.h>

int main() {
    int a = 30, b = 20;

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

    return 0;
}

Output:

a is greater than b.

4. Using Less-Than (`<`) Operator

In this example, we will check if a number is less than another.

main.c

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#include <stdio.h>

int main() {
    int x = 10, y = 25;

    if (x < y) {
        printf("x is less than y.\n");
    } else {
        printf("x is not less than y.\n");
    }

    return 0;
}

Output:

x is less than y.

Conclusion

In this tutorial, we explored comparison operators in C:

Comparison operators are used to compare values and return true or false.
The Not-Equal (!=), Greater-Than (>), and Less-Than (<) operators help control program flow.
These operators are commonly used in conditional statements and loops.

Understanding comparison operators is essential for writing effective C programs.

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C Comparison Operators