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strpbrk, wcspbrk, _mbspbrk, _mbspbrk_l

  • Članek

Scans strings for characters in specified character sets.

Important

_mbspbrk and _mbspbrk_l cannot be used in applications that execute in the Windows Runtime. For more information, see CRT functions not supported in Universal Windows Platform apps.

Syntax

char *strpbrk(
   const char *str,
   const char *strCharSet
); // C only
char *strpbrk(
   char *str,
   const char *strCharSet
); // C++ only
const char *strpbrk(
   const char *str,
   const char *strCharSet
); // C++ only
wchar_t *wcspbrk(
   const wchar_t *str,
   const wchar_t *strCharSet
); // C only
wchar_t *wcspbrk(
   wchar_t *str,
   const wchar_t *strCharSet
); // C++ only
const wchar_t *wcspbrk(
   const wchar_t *str,
   const wchar_t *strCharSet
); // C++ only
unsigned char *_mbspbrk(
   const unsigned char *str,
   const unsigned char *strCharSet
); // C only
unsigned char *_mbspbrk(
   unsigned char *str,
   const unsigned char *strCharSet
); // C++ only
const unsigned char *_mbspbrk(
   const unsigned char *str,
   const unsigned char *strCharSet
); // C++ only
unsigned char *_mbspbrk_l(
   const unsigned char *str,
   const unsigned char *strCharSet,
   _locale_t locale
); // C only
unsigned char *_mbspbrk_l(
   unsigned char *str,
   const unsigned char *strCharSet,
   _locale_t locale
); // C++ only
const unsigned char *_mbspbrk_l(
   const unsigned char *str,
   const unsigned char* strCharSet,
   _locale_t locale
); // C++ only

Parameters

str
Null-terminated, searched string.

strCharSet
Null-terminated character set.

locale
Locale to use.

Return value

Returns a pointer to the first occurrence of any character from strCharSet in str, or a NULL pointer if the two string arguments have no characters in common.

Remarks

The strpbrk function returns a pointer to the first occurrence of a character in str that belongs to the set of characters in strCharSet. The search doesn't include the terminating null character.

wcspbrk and _mbspbrk are wide-character and multibyte-character versions of strpbrk. The arguments and return value of wcspbrk are wide-character strings. The arguments and return value of _mbspbrk are multibyte-character strings.

_mbspbrk validates its parameters. If str or strCharSet is NULL, the invalid parameter handler is invoked, as described in Parameter validation. If execution is allowed to continue, _mbspbrk returns NULL and sets errno to EINVAL. strpbrk and wcspbrk don't validate their parameters. These three functions behave identically otherwise.

_mbspbrk is similar to _mbscspn except that _mbspbrk returns a pointer rather than a value of type size_t.

In C, these functions take a const pointer for the first argument. In C++, two overloads are available. The overload taking a pointer to const returns a pointer to const; the version that takes a pointer to non-const returns a pointer to non-const. The macro _CRT_CONST_CORRECT_OVERLOADS is defined if both the const and non-const versions of these functions are available. If you require the non-const behavior for both C++ overloads, define the symbol _CONST_RETURN.

The output value is affected by the setting of the LC_CTYPE category setting of the locale; for more information, see setlocale. The versions of these functions without the _l suffix use the current locale for this locale-dependent behavior; the version with the _l suffix is identical except that it uses the locale parameter passed in instead. For more information, see Locale.

By default, this function's global state is scoped to the application. To change this behavior, see Global state in the CRT.

Generic-text routine mappings

TCHAR.H routine _UNICODE and _MBCS not defined _MBCS defined _UNICODE defined
_tcspbrk strpbrk _mbspbrk wcspbrk
n/a n/a _mbspbrk_l n/a

Requirements

Routine Required header
strpbrk <string.h>
wcspbrk <string.h> or <wchar.h>
_mbspbrk, _mbspbrk_l <mbstring.h>

For more information about compatibility, see Compatibility.

Example

// crt_strpbrk.c

#include <string.h>
#include <stdio.h>

int main( void )
{
   char string[100] = "The 3 men and 2 boys ate 5 pigs\n";
   char *result = NULL;

   // Return pointer to first digit in "string".
   printf( "1: %s\n", string );
   result = strpbrk( string, "0123456789" );
   printf( "2: %s\n", result++ );
   result = strpbrk( result, "0123456789" );
   printf( "3: %s\n", result++ );
   result = strpbrk( result, "0123456789" );
   printf( "4: %s\n", result );
}

1: The 3 men and 2 boys ate 5 pigs

2: 3 men and 2 boys ate 5 pigs

3: 2 boys ate 5 pigs

4: 5 pigs

See also

String manipulation
Locale
Interpretation of multibyte-character sequences
strcspn, wcscspn, _mbscspn, _mbscspn_l
strchr, wcschr, _mbschr, _mbschr_l
strrchr, wcsrchr, _mbsrchr, _mbsrchr_l