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The result of the / operator is the quotient from the division of the first operand by the second; the result of the % operator is the remainder. In both operations, if the value of the second operand is zero, the behavior is undefined.

(See also undefined behavior 45 of Annex J.)

Division

The result of the / operator is the quotient from the division of the first arithmetic operand by the second arithmetic operand. Division operations are susceptible to divide-by-zero errors. Overflow can also occur during two's complement signed integer division when the dividend is equal to the minimum (negative) value for the signed integer type and the divisor is equal to −1. (See INT32-C. Ensure that operations on non-atomic signed integers do not result in overflow.)

Noncompliant Code Example

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MITRE CWE: CWE-369, "Divide By Zero"

Bibliography

[Seacord 2005] Chapter 5, "Integers"
[Warren 2002] Chapter 2, "Basics"

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