battab

@echo off
setlocal enableDelayedExpansion
set /a A=(%random%%%5+1)*9
set /a B=(%random%%%3+1)*3
set fuhao= +-*/
set n=1
:calc
if %n% gtr 4 goto end
set/a RS=A!fuhao:~%n%,1!B
echo %A% !fuhao:~%n%,1! %B% = %RS%
if not "!fuhao:~%n%,1!"=="" set/a n+=1&goto :calc
:end
pause>nul
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