NAME¶
strstr - locate a substring
SYNOPSIS¶
#include <string.h>
char *strstr(const char *haystack, const char *needle);
DESCRIPTION¶
The strstr() function finds the first occurrence of the substring
needle in the string haystack. The terminating `\0' characters
are not compared.
RETURN VALUE¶
The strstr() function returns a pointer to the beginning of the
substring, or NULL if the substring is not found.
BUGS¶
Early versions of Linux libc (like 4.5.26) would not allow an empty argument.
Later versions (like 4.6.27) work correctly, and return haystack when
needle is empty.
