Making calculations using Windows calculator can get very tedious. Creating your own Command prompt calculator will make your life much easier.

Steps

  1. 1
    Open notepad by going to Start> All Programs> Accessories> Notepad. Vista and 7 users can just type "notepad", without quotes, into the start menu and hit enter
  2. 2
    Copy the following code:
    • @echo off
    • :start
    • Echo Press 1 for Addition
    • echo Press 2 for Subtraction
    • echo Press 3 for Multiplication
    • echo Press 4 for Division
    • echo Press 5 to Quit
    • set /p type=
    • if %type%==1 goto a
    • if %type%==2 goto b
    • if %type%==3 goto c
    • if %type%==4 goto d
    • if %type%==5 goto e
    • :a
    • echo Addition
    • echo Please choose the 2 numbers you wish to add
    • set /p num1=
    • set /p num2=
    • echo %num1%+%num2%?
    • pause
    • set /a Answer=%num1%+%num2%
    • echo %Answer%
    • pause
    • goto start
    • :b
    • echo Subtraction
    • echo Please choose the 2 numbers you wish to subtract
    • set /p num1=
    • set /p num2=
    • echo %num1%-%num2%?
    • pause
    • set /a Answer=%num1%-%num2%
    • echo %Answer%
    • pause
    • goto start
    • :c
    • echo Multiplication
    • echo Please choose the 2 numbers you wish to multiply
    • set /p num1=
    • set /p num2=
    • echo %num1%*%num2%?
    • pause
    • set /a Answer=%num1%*%num2%
    • echo %Answer%
    • pause
    • goto start
    • :d
    • echo Division
    • echo Please choose the 2 numbers you wish to divide
    • set /p num1=
    • set /p num2=
    • echo %num1%/%num2%?
    • pause
    • set /a Answer=%num1%/%num2%
    • echo %Answer%
    • pause
    • goto start
    • :e
    • echo. Done!
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  3. 3
    Go to File> Save As
    • Change the "Save as type" box to "All Files"
    • Type "anything.bat" into file name and click "Save"
  4. 4
    Double click on the file and you will get this window:
  5. 5
    Follow the simple instructions and your answer will be displayed
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Community Q&A

  • Question
    Do I save this code on the desktop?
    Community Answer
    Community Answer
    You can, yes.
  • Question
    Why are the decimal places not shown for division?
    Community Answer
    Community Answer
    The set /a command (used for doing the mathematical operations) cannot display decimal places, so it rounds it down in all cases.
  • Question
    Step 4 is done. What do we have to do in step 5?
    Community Answer
    Community Answer
    Try it out!
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About This Article

wikiHow is a “wiki,” similar to Wikipedia, which means that many of our articles are co-written by multiple authors. To create this article, 15 people, some anonymous, worked to edit and improve it over time. This article has been viewed 119,392 times.
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Co-authors: 15
Updated: April 21, 2022
Views: 119,392
Categories: Command Prompt
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