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NAME

strcmp, strncmp — compare strings

LIBRARY

library “libc”

SYNOPSIS

#include <string.h>

int
strcmp(const char *s1, const char *s2);

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

RETURN VALUES

The strcmp() and strncmp() functions return an integer greater than, equal to, or less than 0, according to whether the string s1 is greater than, equal to, or less than the string s2. The comparison is done using unsigned characters, so that ‘\200’ is greater than ‘\0’.

The strncmp() function compares not more than len characters.

SEE ALSO

bcmp(3), memcmp(3), strcasecmp(3), strcoll(3), strxfrm(3)

STANDARDS

The strcmp() and strncmp() functions conform to ANSI X3.159-1989 (“ANSI C89”).

NOTES

If len is 0, strncmp() always returns 0.