wcspbrk

From cppreference.com
< c‎ | string‎ | wide
Defined in header <wchar.h>
wchar_t *wcspbrk( const wchar_t *dest, const wchar_t *str );
(1) (since C95)
/*QWchar_t*/ *wcspbrk( /*QWchar_t*/ *dest, const wchar_t *str );
(2) (since C23)
1) Finds the first character in wide string pointed to by dest, that is also in wide string pointed to by str.
2) Type-generic function equivalent to (1). Let T be an unqualified wide character object type.
  • If dest is of type const T*, the return type is const wchar_t*.
  • Otherwise, if dest is of type T*, the return type is wchar_t*.
  • Otherwise, the behavior is undefined.
If a macro definition of each of these generic functions is suppressed to access an actual function (e.g. if (wcspbrk) or a function pointer is used), the actual function declaration (1) becomes visible.

Parameters

dest - pointer to the null-terminated wide string to be analyzed
src - pointer to the null-terminated wide string that contains the characters to search for

Return value

Pointer to the first character in dest, that is also in str, or a null pointer if no such character exists.

Notes

The name stands for "wide character string pointer break", because it returns a pointer to the first of the separator ("break") characters.

Example

#include <stdio.h>
#include <wchar.h>
 
int main(void)
{
    const wchar_t* str = L"Hello world, friend of mine!";
    const wchar_t* sep = L" ,!";
 
    unsigned int cnt = 0;
    do {
       str = wcspbrk(str, sep); // find separator
       if (str) str += wcsspn(str, sep); // skip separator
       ++cnt; // increment word count
    } while (str && *str);
 
    wprintf(L"There are %u words.\n", cnt);
}

Output:

There are 5 words.

References

  • C11 standard (ISO/IEC 9899:2011):
  • 7.29.4.5.3 The wcspbrk function (p: 436)
  • C99 standard (ISO/IEC 9899:1999):
  • 7.24.4.5.3 The wcspbrk function (p: 382)

See also

returns the length of the maximum initial segment that consists
of only the wide chars not found in another wide string
(function)
(C95)
finds the first occurrence of a wide character in a wide string
(function)
finds the first location of any character in one string, in another string
(function)