What is the difference between / and % in C language?

In C language / is used for integer division, and % is used for remainder. The / operator divides two integers and the result is an integer whose sign is determined by the signs of the dividend and divisor. The % operator performs the remainder operation on two integers, and the result is an integer with the same sign as the dividend.

The difference between / and % in C language

Get straight to the point

C language / and % are two operators with different functions: / is used for integer division, and % is used for remainder.

Detailed explanation

1. Integer division (/)

• / operator operates on two integers Division operation, the result is an integer.

• The sign of the result is determined by the sign of the dividend and divisor, following the following rules:

  • Division with different signs is a negative number
  • Division with the same sign is Positive number

2. Remainder (%)

• % operator performs remainder operation on two integers , the result is an integer.
• The result of the remainder is the remainder left in the division operation, and its sign is the same as the dividend.

Usage examples

<code class="c">int a = 10;
int b = 3;

// / 运算符执行整数除法
int quotient = a / b;  // 结果为 3

// % 运算符执行求余运算
int remainder = a % b;  // 结果为 1</code>

Other differences

In addition to the above differences, / and % also have the following differences :

• Precision: The result of the / operator is always an integer, while the result of the % operator can be either a positive or a negative integer.
• Applicable types: / operator can only be used for integers, while % operator can be used for integers, floating point numbers and pointer types.
• Priority: / operator has higher priority than % operator.

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