文件操作
........\Debug
........\student
........\.......\abc.txt
........\.......\ch19_15.cpp
........\.......\Debug
........\.......\.....\ch19_15.obj
........\.......\.....\master.obj
........\.......\.....\student.exe
........\.......\.....\student.obj
........\.......\.....\student.pdb
........\.......\.....\vc60.pdb
........\.......\master.cpp
........\.......\master.h
........\.......\student.cpp
........\.......\student.dsp
........\.......\student.h
........\.......\student.plg
........\文件操作.dsw
........\文件操作.ncb
........\文件操作.opt