.\" Copyright (c) 1990, 1991 The Regents of the University of California.
.\" All rights reserved.
.\"
.\" This code is derived from software contributed to Berkeley by
.\" Chris Torek and the American National Standards Committee X3,
.\" on Information Processing Systems.
.\"
.\" %sccs.include.redist.man%
.\"
.\"     @(#)strstr.3	5.3 (Berkeley) 06/29/91
.\"
.Dd 
.Dt STRSTR 3
.Os
.Sh NAME
.Nm strstr
.Nd locate a substring in a string
.Sh SYNOPSIS
.Fd #include <string.h>
.Ft char *
.Fn strstr "const char *big" "const char *little"
.Sh DESCRIPTION
The
.Fn strstr
function
locates the first occurrence of the null-terminated string
.Fa little
in the null-terminated string
.Fa big .
If
.Fa little
is the empty string,
.Fn strstr
returns
.Fa big ;
if
.Fa little
occurs nowhere in
.Fa big ,
.Fn strstr
returns NULL;
otherwise
.Fn strstr
returns a pointer to the first character of the first occurrence of
.Fa little .
.Sh SEE ALSO
.Xr index 3 ,
.Xr memchr 3 ,
.Xr rindex 3 ,
.Xr strchr 3 ,
.Xr strcspn 3 ,
.Xr strpbrk 3 ,
.Xr strrchr 3 ,
.Xr strsep 3 ,
.Xr strspn 3 ,
.Xr strtok 3
.Sh STANDARDS
The
.Fn strstr
function
conforms to
.St -ansiC .