library system
..............\1.dsp
..............\1.dsw
..............\1.ncb
..............\1.opt
..............\1.plg
..............\Debug
..............\.....\1.exe
..............\.....\1.ilk
..............\.....\1.obj
..............\.....\1.opt
..............\.....\1.pch
..............\.....\1.pdb
..............\.....\5.obj
..............\.....\vc60.idb
..............\.....\vc60.pdb
..............\book.txt
..............\library.c
..............\record.txt
..............\return.txt
..............\stu.txt