bsd man page for strstr

STRSTR(3)						     Library Functions Manual							 STRSTR(3)

NAME
       strstr - locate a substring in a string

SYNOPSIS
       #include <string.h>

       char *
       strstr(big, little)
       char *big, *little;

DESCRIPTION
       The  strstr()  function	locates the first occurrence of the null-terminated string little in the null-terminated string big.  If little is
       the empty string, strstr() returns big; if little occurs nowhere in big, strstr() returns NULL; otherwise strstr() returns a pointer to the
       first character of the first occurrence of little.

SEE ALSO
       index(3), memchr(3), rindex(3), strchr(3), strcspn(3), strpbrk(3), strrchr(3), strsep(3), strspn(3), strtok(3)

STANDARDS
       The strstr() function conforms to ANSI C X3/159-1989 (``ANSI C'').

4.4 Berkeley Distribution					 January 15, 1996							 STRSTR(3)