Calculator Batch Program - By M1cr0s

:: TO RUN THIS BATCH PROGRAM COPY AND PASTE THIS SCRIPT INTO A TEXT DOCUMENT AND SAVE IT AS "(something).bat" AND BE SURE TO SAVE TO ALL FILES.
:: NEXT, AN ICON WITH A GEAR ON IT WILL APPEAR WHERE YOU OPENED THE TEXT DOCUMENT AND SIMPLY RUN THE PROGRAM! :)

@echo off
title Calculator Program - Made by M1cr0s
color a
cls
:start
color a
echo ////////////////////////////
echo Choose a type of calculation
echo ////////////////////////////
echo.
echo a) Addition
echo b) Subtraction
echo c) Multiplication
echo e) Division
echo.
set /p do=Value:

rem If Statements telling the system what to do for certain characters entered
if %do% == a goto add
if %do% == A goto add
if %do% == b goto sub
if %do% == B goto sub
if %do% == c goto mult
if %do% == C goto mult
if %do% == e goto div
if %do% == E goto div

rem If the user inputs an invalid character
cls
color c
echo Invalid value %do%
pause
cls
goto start


rem If the user chooses a
:add
cls
echo ---------------
echo ADDITION
echo ---------------
echo.
set /p no1="Num 1: "
echo       +
set /p no2="Num 2: "
set /a sum = no1+no2
echo ------------
echo %sum%
echo.
pause
cls
goto start

rem If the user chooses b
:sub
cls
echo ----------------------
echo SUBTRACTION
echo ----------------------
echo.
set /p no1="Num 1: "
echo       -
set /p no2="Num 2: "
set /a sum = no1-no2
echo -------------
echo %sum%
echo.
pause
cls
goto start

rem If the user chooses c
:mult
cls
echo --------------------------
echo MULTIPLICATION
echo --------------------------
echo.
set /p no1="Num 1: "
echo       *
set /p no2="Num 2: "
set /a sum=no1*no2
echo ------------
echo %sum%
echo.
pause
cls
goto start

rem If the user chooses d
:div
cls
echo --------------
echo DIVISION
echo --------------
echo.
set /p no1="Num 1: "
echo.      /
set /p no2="Num 2: "
set /a sum=no1/no2
echo ------------
echo %sum%
echo.
pause
cls
goto start