xref: /freebsd/lib/libc/string/strstr.3 (revision 588a200ce1e5c42fc09771659c6a1f9af0ee7857)

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.\"     @(#)strstr.3	8.1 (Berkeley) 6/4/93
.\" $FreeBSD$
.\"
.Dd June 4, 1993
.Dt STRSTR 3
.Os
.Sh NAME
.Nm strstr
.Nd locate a substring in a string
.Sh LIBRARY
.Lb libc
.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 memchr 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 -isoC .