Basicly, the main purpose of a function is to prevent repeated code, right? So, if you have a set of code that your going to use again and again, you put the code into a function, and then just call the function. My problem is with variables - how do you use a common variable in four different functions? Like if your making an rpg, you would probably need the variable Players_Health. If you have four functions that use this variable, how do you have function1 recogonize the change of the Players_Health in function2 without making a new variable each time in each function?
The only way I know to do this is to initilize and declare the variable in no function (at the very top) which is bad practice.