STRSTR(3) BSD Library Functions Manual STRSTR(3)
NAME
strstr, strcasestr, strnstr -- locate a substring in a string
LIBRARY
Standard C Library (libc, -lc)
SYNOPSIS
#include <string.h>
char *
strstr(const char *haystack, const char *needle);
char *
strcasestr(const char *haystack, const char *needle);
char *
strnstr(const char *haystack, const char *needle, size_t len);
#include <string.h>
#include <xlocale.h>
char *
strcasestr_l(const char *haystack, const char *needle, locale_t loc);
DESCRIPTION
The strstr() function locates the first occurrence of the null-terminated string needle in the null-terminated string haystack.
The strcasestr() function is similar to strstr(), but ignores the case of both strings.
The strnstr() function locates the first occurrence of the null-terminated string needle in the string haystack, where not more than len
characters are searched. Characters that appear after a '