Calculator bat file commands

 calculator app using variables

@echo off

:start

set /p MATH=Input_values?

set /a RESULT=%MATH%

echo %RESULT%

if %RESULT%==5 start app.exe

pause

cls

goto start

Explanations

set /p MATH=Input_values?  to initiate a maths calculation

set /a RESULT=%MATH%   to show the answers

if %RESULT%==5 start app.exe  to perform another process. This is not necessary

pause freeze the screen to move next command. avoid screen exit

goto start to search the word next to goto and re do the process what is written below after the search done on a word