STRSTR(3) OpenBSD Programmer's Manual STRSTR(3)NAME
strstr, strcasestr - locate a substring in a string
SYNOPSIS
#include <string.h>
char *
strstr(const char *big, const char *little);
char *
strcasestr(const char *big, const char *little);
DESCRIPTION
The strstr() function locates the first occurrence of the NUL-terminated
string little in the NUL-terminated string big.
The strcasestr() function is similar to strstr() but ignores the case of
both strings.
If little is an empty string, big is returned; if little occurs nowhere
in big, NULL is returned; otherwise a pointer to the first character of
the first occurrence of little is returned.
SEE ALSOmemchr(3), strchr(3), strcspn(3), strpbrk(3), strrchr(3), strsep(3),
strspn(3), strtok(3)STANDARDS
The strstr() function conforms to ANSI X3.159-1989 (``ANSI C'').
HISTORY
The strcasestr() function first appeared in OpenBSD 3.8.
OpenBSD 4.9 September 19, 2007 OpenBSD 4.9