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