How do I make a bat file add a number or take away from a choice

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So my batch file is like a game that has money, Well I want it to subtract if they buy something from the game,
My code is below.

Game.bat

@echo off

set money= 1000

echo money left %money%
echo this is a sample trade
echo 1.) Buy gem ($10)
echo 2.) Buy sword($35)
echo 3.) Buy gun($55)

set /p sbuy= 1, 2, or 3: 

if %sbuy% == 1 goto ttrade1
if %sbuy% == 2 goto ttrade2
if %sbuy% == 3 goto ttrade3

Now at this point I want the %money% to subtract from the options and display the current amount of money left.

If anyone can help with this I would be happy

Posted 9-Nov-13 14:58pm

Braydon

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Sergey Alexandrovich Kryukov 9-Nov-13 21:20pm

Don't you think it would be much more fruitful to do some "real" programming? Batch files are useful when they do something simpler.
—SA

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OriginalGriff · Accepted Answer · 2013-11-09T20:59:00

To be honest, Sergey is probably right - doing this kind of thing in a batch file is not the easiest way: it's a bit like trying to move house using a Ford Ka. You can do it...but it's going to take some serious effort and you'd be much better off using a Transit instead. :laugh:

But, if you must...

The SET statement normally works with string values, but you can force it to integers by using the "/A" option:

SET /A money=1000

Then, you can do things like:

SET /A money=money-100

But seriously? It's going to be difficult, time consuming and a general PITA to maintain - you would be much better off investing your time in learning a "proper" programming language - even QuickBasic would be easier (and if you only knew how much I dislike basic in all it's varieties, you would know how unlikely I am to use that phrase).

I would suggest trying in C# - it's pretty easy to pick up, and it really will make your task a whole lot easier...