#include <stdio.h>
#include <locale.h>
#include <string.h>
#include <wchar.h>
int main(int argc, char* argv[])
{
setlocale(LC_ALL,"Russian");
static wchar_t str[256] = L"Цыганова\0";
int count = 0;
wchar_t wpchars[] = L"ауоыиэяюёе";
for (int index = 0; str[index] != '\0'; index++)
if (wcschr(wpchars, str[index])) count++;
wprintf(L"string = %s\nvowels count = %d\n",str,count);
return 0;
}