www.delorie.com/gnu/docs/smalltalk/gst_64.html

search

	Buy GNU books!

GNU Smalltalk User's Guide

4.4.6 Moving money around

We can now create accounts, and look at them. As it stands, though, our balance will always be 0--what a tragedy! Our final methods will let us deposit and spend money. They're very simple:

!Account methodsFor: 'moving money'! spend: amount balance := balance - amount ! deposit: amount balance := balance + amount ! !

With these methods you can now deposit and spend amounts of money. Try these operations:

a deposit: 125! a deposit: 20! a printNl! a spend: 10! a printNl!