Проект OpenNet: MAN strnstr (3) Библиотечные вызовы (FreeBSD и Linux)

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strnstr (3)

>> strnstr (3) ( FreeBSD man: Библиотечные вызовы )

BSD mandoc

NAME



strstr , strcasestr , strnstr

 - locate a substring in a string

LIBRARY

Lb libc

SYNOPSIS

#include <string.h>
char * strstr (const char *big const char *little);
char * strcasestr (const char *big const char *little);
char * strnstr (const char *big const char *little size_t len);

DESCRIPTION

The strstr ();
function locates the first occurrence of the null-terminated string Fa little in the null-terminated string Fa big .

The strcasestr ();
function is similar to strstr (,);
but ignores the case of both strings.

The strnstr ();
function locates the first occurrence of the null-terminated string Fa little in the string Fa big , where not more than Fa len characters are searched. Characters that appear after a `\0' character are not searched. Since the strnstr ();
function is a Fx specific API, it should only be used when portability is not a concern.

RETURN VALUES

If Fa little is an empty string, Fa big is returned; if Fa little occurs nowhere in Fa big , NULL is returned; otherwise a pointer to the first character of the first occurrence of Fa little is returned.

EXAMPLES

The following sets the pointer ptr to the Qq Li Bar Baz portion of largestring

const char *largestring = "Foo Bar Baz";
const char *smallstring = "Bar";
char *ptr;

ptr = strstr(largestring, smallstring);

The following sets the pointer ptr to NULL because only the first 4 characters of largestring are searched:

const char *largestring = "Foo Bar Baz";
const char *smallstring = "Bar";
char *ptr;

ptr = strnstr(largestring, smallstring, 4);

STANDARDS

The strstr ();
function conforms to St -isoC .

Партнёры:

Хостинг:

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Created 1996-2024 by Maxim Chirkov
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