wmemchr
Defined in header <wchar.h>
|
||
---|---|---|
|
(since C95) |
Locates the first occurrence of wide character ch
in the initial count
wide characters of the wide character array or integer array of compatible type, pointed to by ptr
.
If count
is zero, the function returns a null pointer.
Parameters
ptr | - | pointer to the wide character array to be examined |
ch | - | wide character to search for |
count | - | number of wide characters to examine |
Return value
Pointer to the location of the wide character, or a null pointer if no such character is found.
Example
#include <stdio.h>
#include <wchar.h>
#include <locale.h>
int main(void)
{
wchar_t str[] = L"诺不轻信,故人不负我\0诺不轻许,故我不负人。";
size_t sz = sizeof str / sizeof *str;
wchar_t target = L'许';
wchar_t* result = wmemchr(str, target, sz);
if (result) {
setlocale(LC_ALL, "en_US.utf8");
printf("Found '%lc' at position %td\n",target, result - str);
}
}
Possible output:
Found '许' at position 14
References
C11 standard (ISO/IEC 9899:2011):
- 7.29.4.5.8 The wmemchr function (p: 438)
C99 standard (ISO/IEC 9899:1999):
- 7.24.4.5.8 The wmemchr function (p: 384)
See also
searches an array for the first occurrence of a character (function) | |
(C95) |
finds the first occurrence of a wide character in a wide string (function) |
© cppreference.com
Licensed under the Creative Commons Attribution-ShareAlike Unported License v3.0.
http://en.cppreference.com/w/c/string/wide/wmemchr