wmemchr
Header: <wchar.h>
- 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.
# Declarations
wchar_t *wmemchr( const wchar_t *ptr, wchar_t ch, size_t count );
(since C95)
/*QWchar_t*/ *wmemchr( /*Qwchar_t*/ *ptr, wchar_t ch, size_t count );
(since C23)
# Parameters
ptr: pointer to the wide character array to be examinedch: wide character to search forcount: 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 <locale.h>
#include <stdio.h>
#include <wchar.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);
}
}