列主元消元法
............\Debug
............\.....\practice1.exe
............\.....\practice1.ilk
............\.....\practice1.obj
............\.....\practice1.pch
............\.....\practice1.pdb
............\.....\vc60.idb
............\.....\vc60.pdb
............\practice1.cpp
............\practice1.dsp
............\practice1.dsw
............\practice1.ncb
............\practice1.opt
............\practice1.plg