Use the MFC VC++ compilation, a simple open file and Save the program to txt file-based, free to modify the use of other extensions.

Openfile_and_Savefile
.....................\debug
.....................\.....\Openfile_and_Savefile.exe
.....................\.....\Openfile_and_Savefile.ilk
.....................\.....\Openfile_and_Savefile.pdb
.....................\Openfile_and_Savefile
.....................\Openfile_and_Savefile.ncb
.....................\Openfile_and_Savefile.sln
.....................\Openfile_and_Savefile.suo
.....................\.....................\Debug
.....................\.....................\.....\BuildLog.htm
.....................\.....................\.....\mt.dep
.....................\.....................\.....\Openfile_and_Savefile.exe.embed.manifest
.....................\.....................\.....\Openfile_and_Savefile.exe.embed.manifest.res
.....................\.....................\.....\Openfile_and_Savefile.exe.intermediate.manifest
.....................\.....................\.....\Openfile_and_Savefile.obj
.....................\.....................\.....\Openfile_and_Savefile.pch
.....................\.....................\.....\Openfile_and_Savefile.res
.....................\.....................\.....\Openfile_and_SavefileDlg.obj
.....................\.....................\.....\stdafx.obj
.....................\.....................\.....\vc80.idb
.....................\.....................\.....\vc80.pdb
.....................\.....................\Openfile_and_Savefile.aps
.....................\.....................\Openfile_and_Savefile.cpp
.....................\.....................\Openfile_and_Savefile.h
.....................\.....................\Openfile_and_Savefile.rc
.....................\.....................\Openfile_and_Savefile.vcproj
.....................\.....................\Openfile_and_Savefile.vcproj.PMC-22FF0B978F7.Patrick.user
.....................\.....................\Openfile_and_SavefileDlg.cpp
.....................\.....................\Openfile_and_SavefileDlg.h
.....................\.....................\ReadMe.txt
.....................\.....................\res
.....................\.....................\resource.h
.....................\.....................\...\Openfile_and_Savefile.ico
.....................\.....................\...\Openfile_and_Savefile.rc2
.....................\.....................\stdafx.cpp
.....................\.....................\stdafx.h

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