STRNCMP(3) Library Functions Manual STRNCMP(3)

strncmp — compare part of two strings

#include <string.h>

int strncmp(const char *s1, const char *s2, size_t n);

The strncmp() function compares not more than n bytes (bytes that follow a null byte are not compared) from the array pointed to by s1 to the array pointed to by s2 .

The sign of a non-zero return value is determined by the sign of the difference between the values of the first pair of bytes (both interpreted as type ) that differ in the strings being compared.

Upon successful completion, strncmp() returns an integer greater than, equal to or less than 0, if the possibly null-terminated array pointed to by s1 is greater than, equal to or less than the possibly null-terminated array pointed to by s2 respectively.

No errors are defined.

None.

None.

None.

strcmp(3) , <string.h> .

Derived from Issue 1 of the SVID.

February 1997 posix.fail