文件名称:6_20(unfinished)
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c++上课用的代码，老师叫我们做的。做的不好啦，
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下载文件列表
6_20(unfinished)
................\6_20
................\....\6_20.cpp
................\....\6_20.dsp
................\....\6_20.dsw
................\....\6_20.ncb
................\....\6_20.opt
................\....\6_20.plg
................\....\Debug
................\6_20
................\....\6_20.cpp
................\....\6_20.dsp
................\....\6_20.dsw
................\....\6_20.ncb
................\....\6_20.opt
................\....\6_20.plg
................\....\Debug