灰度转换\Debug\hello.exe
........\.....\hello.ilk
........\.....\hello.obj
........\.....\hello.pch
........\.....\hello.pdb
........\.....\lena.jpg
........\.....\vc60.idb
........\.....\vc60.pdb
........\hello.c
........\hello.dsp
........\hello.dsw
........\hello.ncb
........\hello.opt
........\hello.plg
........\lena.jpg
........\Makefile
........\Debug
灰度转换