如何删除文件\Demo\Demo.cpp ............\....\Demo.dsp ............\....\Demo.dsw ............\....\Demo.h ............\....\Demo.plg ............\....\Demo.rc ............\....\DemoDlg.cpp ............\....\DemoDlg.h ............\....\ReadMe.txt ............\....\res\Demo.ico ............\....\...\Demo.rc2 ............\....\resource.h ............\....\StdAfx.cpp ............\....\StdAfx.h ............\....\res ............\Demo 如何删除文件