Originální popis anglicky:
strstr - locate a substring
Návod, kniha: Linux Programmer's Manual
#include <string.h>
char *strstr(const char *haystack, const char *needle);
The
strstr() function finds the first occurrence of the substring
needle in the string
haystack. The terminating `\0' characters
are not compared.
The
strstr() function returns a pointer to the beginning of the
substring, or NULL if the substring is not found.
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.
ISO 9899
index(3),
memchr(3),
rindex(3),
strchr(3),
strpbrk(3),
strsep(3),
strspn(3),
strtok(3)
