三种方式写CString文件

// use C to write into file
FILE        *pFile=fopen("1.txt","w");
CString     strTemp = "hello world!";
fwrite(strTemp,1,strTemp.GetLength(),pFile);
fflush(pFile);
fclose(pFile);

// use C++ to write into file
ofstream    ofs("2.txt");
CString     str = "Use C++.Hello World !";
ofs.write(str,str.GetLength());
ofs.flush();
ofs.close();

// use MFC to write into file
CString     str = "Use CFile,Hello World !";
CFile       file("3.txt",CFile::modeCreate | CFile::modeWrite);
file.Write(str,str.GetLength());
file.Flush();
file.Close();