The difference between / and % in C language

The difference between '/' and '%' operators in C language: '/' is the division operator, used to calculate the quotient. '%' is the modulo operator used to calculate the remainder. The divisor must be a positive integer, and the dividend can be a positive or negative integer.

The difference between / and % in C language

In C language, '/' and '%' are two different operators used for different purposes:

1. / (division operator)

• '/' is the division operator used to calculate the quotient of two numbers.
• It returns the result of dividing the dividend (the first operand) by the divisor (the second operand).
• If the dividend and divisor are both integers, the result is truncated to an integer.
• If the dividend or divisor is a real number, the result is a real number.

2. % (modulo operator)

• '%' is Modulo operator, used to calculate the remainder of two integers.
• It returns the remainder obtained by dividing the dividend (the first operand) by the divisor (the second operand).
• The divisor must be a positive integer, otherwise the result is undefined.
• The dividend can be positive or negative.

Example:

Division operation:

<code class="c">int a = 10;
int b = 3;
int result = a / b; // result = 3 (整数除法)</code>

Modulo operation:

<code class="c">int a = 10;
int b = 3;
int result = a % b; // result = 1 (余数)</code>

Note:

• Modulo zero is undefined and will generate a runtime error.
• If the absolute value of the dividend is greater than the absolute value of the divisor, the sign of the remainder is the same as the dividend. Otherwise, the remainder has the same sign as the divisor.

The above is the detailed content of The difference between / and % in C language. For more information, please follow other related articles on the PHP Chinese website!