运动的球
........\ball.c
........\ball.dsp
........\ball.dsw
........\ball.ncb
........\ball.opt
........\ball.plg
........\Debug
........\.....\ball.exe
........\.....\ball.ilk
........\.....\ball.obj
........\.....\ball.pch
........\.....\ball.pdb
........\.....\vc60.idb
........\.....\vc60.pdb