CopyFile函数的问题

编的一个程序COPY文件的，总是出错，不知道是不是输入的格式问题？
#include "stdafx.h "
#include <windows.h>
#include <iostream>

using namespace std;
#pragma comment(lib, "msvcrtd.lib ")
int _tmain(int argc, _TCHAR* argv[])
{
char SourceFileName[MAX_PATH];
char DestFileName[MAX_PATH];
BOOL Success;
cout < < "please input your source file name " < < endl;
cin > > SourceFileName;
cout < < SourceFileName < <endl;
cout < < "please input your dest file name " < < endl;
cin > > DestFileName;
LPCWSTR oldname;
LPCWSTR newname;
oldname = (LPCWSTR)SourceFileName;
newname = (LPCWSTR)DestFileName;

Success = CopyFile(oldname,newname,TRUE);

if(!Success)

cout < < "fail to open that file.the error code is " < < GetLastError < < endl;

else
cout < < "the file copyed is success " < < endl;

system( "PAUSE ");
return 0;
}


打开文件总是失败，文件在目录中是存在的


[解决办法]

int main(int argc,char* argv[])
{
string src,des;
BOOL Success;
cout < < "please input your source file name " < < endl;
cin > > src;
cout < < src < <endl;
cout < < "please input your dest file name " < < endl;
cin > > des;
Success = CopyFileA(src.c_str() ,des.c_str(),TRUE);
if(!Success)
cout < < "fail to open that file.the error code is " < < GetLastError < < endl;
else
cout < < "the file copyed is success " < < endl;

return 0;
}