What does c% mean in c language

In C language, c% represents a modulus operation, calculating the remainder of two integers. Its syntax is result = c % n;, where c is the divisor, n is the divisor, and result is the remainder variable. The modulus operation divides c by n and returns the remainder.

The meaning of c% in C language

c% is a modulus operator in C. It calculates the remainder of two integers.

grammar:

 <code class="c">result = c % n;</code>

in:

• result is the result variable.
• c is the divisor.
• n is the divisor.

How it works:

c% operator divides c by n and returns the remainder. The remainder is the part in the division operation that cannot be divided by the dividend.

Example:

 <code class="c">int result; result = 7 % 3; // result = 1 (余数) result = -7 % 3; // result = -1 (负余数) result = 0 % 5; // result = 0</code>

Notes:

• If the divisor is 0, c% operator is undefined.
• If both the dividend and the dividend have a sign, the remainder's sign is the same as the divisor's sign.
• c% operator can be used to check whether a number can be divisible by another number by checking whether the remainder is 0.

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