yangfengoo

@echo off&setlocal enabledelayedexpansion
set/p fw=请输入运算范围：
:loop
set/a x1=!random!%%!fw!,x2=!random!%%!fw!,x=!random!%%2
if !x!==0 (
     set/a xx=x1+x2 
     if !xx! leq !fw! (echo !x1!+!x2!=?) else (goto loop)   
   ) else (
     set/a xx=x1-x2
  if !xx! geq 0 (echo !x1!-!x2!=?) else (goto loop)
   )
set/p da=请输入答案：
if "!xx!"=="!da!" (echo,正确) else (echo,错误,正确答案是:!xx!)
echo,&goto loop
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[ 本帖最后由 yangfengoo 于 2010-9-27 10:12 编辑 ]