দেখেন তো কাজ করে কি না? এটা আমি অমিত ভাইয়ের ব্লগ থেকে কপি করে রাখছিলাম আরো অনেক আগে৷ ঐ জিনিসটাই…….
@echo off
color 0A
title CALCULATOR VERSION
:loop
cls
echo by Nader
echo _
echo by [email protected]
echo.
echo Calculator Version
echo ———————————————–
echo * = MULTIPLY
echo + = ADD
echo – = SUBTRACT
echo 2 = SQUARED
echo / = DIVIDE
echo After an equation, type CLEAR to clear the screen of your equations, type KEEP to leave them there, or type EXIT to leave.
:noclear
set /p UDefine=
set /a UDefine=%UDefine%
echo.
echo =
echo.
echo %UDefine%
echo KEEP, CLEAR, OR EXIT?
set /p clearexitkeep=
if %clearexitkeep%==CLEAR goto loop
if %clearexitkeep%==KEEP echo. && goto noclear
if %clearexitkeep%==EXIT (exit)
:misspell
echo.
echo ———————————————–
echo You misspelled your command. Please try again (make sure you are typing in all caps LIKE THIS).
echo Commands:
echo CLEAR Clear all previous equations and continue calculating.
echo KEEP Keep all previous equations and continue calculating.
echo EXIT Leave your calculating session
echo Enter in a command now.
set /p clearexitkeep=
if %clearexitkeep%==CLEAR goto loop
if %clearexitkeep%==EXIT (exit)
if %clearexitkeep%==KEEP goto noclear
goto misspell