27.C语言宽字符操作

#include <locale.h>

 setlocale(LC_ALL, "zh-CN");
     wchar_t wch = L'我';
     putwchar(wch);

 #define _CRT_SECURE_NO_WARNINGS
 #include <string.h>
 #include <stdio.h>
 #include <locale.h>
 #include <Windows.h>

 //求长度
 int mywcslen(wchar_t *wstr)
 {
     int i = ;
     while (*wstr != '\0')
     {
         i++;
         wstr++;
     }
     return i;
 }

 //COPY
 wchar_t *mywcscpy(wchar_t *dest, const wchar_t *source)
 {
     if (dest == NULL || source == NULL)
     {
         return NULL;
     }
     else
     {
         wchar_t *pdest = dest;

         while ((*pdest++) = (*source++))
         {

         }
         return dest;
     }
 }

 void main()
 {
     //本地化
     setlocale(LC_ALL, "zh-CN");//设定中文
     wchar_t wch[] = L"好文要顶";

     wchar_t tmp[];
     mywcscpy(tmp, wch);

     //输出宽字符
     wprintf(L"%ls", tmp);

     //长度
     int length = wcslen(wch);
     printf("%d", length);

     system("pause");
 }