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.TH strstr 3
.SH NAME
strstr - find substring in string
.SH SYNOPSIS
#include <string.h>

char *strstr(const char *s1, const char *s2)
.SH DESCRIPTION
The
.BR strstr ()
function locates the first occurence
in the string pointed to by
.I s1
of the sequence of characters
(excluding the terminating null character)
in the string pointed to by
.IR s2 .
.SH RETURN VALUE
The
.BR strchr ()
function shall return a pointer to the located string
or a null pointer if
.I s2
is not found.
.PP
If
.I s2
points to an empty string,
the function returns
.IR s1 .
.SH STANDARDS
ISO/IEC 9899:1999 Section 7.21.5.7