**圖書管理程序
set talk off
clear
use 圖書信息表
@ 10,15 say "1,--------查詢圖書"
@ 11,15 say "2.--------增加圖書"
@ 12,15 say "3.--------刪除圖書"
@ 13,15 say "4.--------修改圖書"
@ 14,15 say "5.--------返回上一目錄"
accept "請輸入選擇的菜單項(1,2,3,4或5)"to s
do case
case s="1"
accept "請輸入圖書的名"to ming
list for bookname=ming
case s="2"
append
case s="3"
accept "請輸入要刪除的圖書的名" to ming
dele all for username=ming
accept "確實要刪除該圖書的記錄嗎?(Y/N):" to yn
if yn="Y"
pack
endif
case s="4"
browse 
case s="5"
do 程序1.prg
**調用 程序1.prg
otherwise 
wait "請選擇輸入錯誤，按任意鍵退出"
endcase
return