Let’s create a banking system. First, let’s define the bank with the proper variables that all banks share.
We want to do 3 functions — check balance, withdrawl, and deposits. Next, let’s create a bank and define it’s role.
Let’s create a new class- a credit union — that inherits from the bank class.
You can also set your public variables to be protected — that way only subclasses that inherit can access the information.
We can also protect the functions as well.
