C++ 中TCHAR字符串数组转化为Char类型数组

#include <stdio.h> 
#include <tchar.h>  

char* UnicodeToAnsi( const wchar_t* szStr ) 
{ 
 int nLen = WideCharToMultiByte( CP_ACP, 0, szStr, -1, NULL, 0, NULL, NULL ); 
 if (nLen == 0) 
 { 
    return NULL; 
 } 
 char* pResult = new char[nLen]; 
 WideCharToMultiByte( CP_ACP, 0, szStr, -1, pResult, nLen, NULL, NULL ); 
 return pResult; 
 } 

void  main(){

    TCHAR msg[100]; 
    swprintf_s(msg, L"sjlkjdkld"); 
    char *str=UnicodeToAnsi(msg);

}