Variables that change themselves over time

How to?

For example, I want to make a pong game and I want the balls x value to increase over time. I have tried xvar=xvar+1; but that makes it remain static...

Okay problem solved

 

What do you mean by remain static? They change as you increase them by 1.

 

Well I want them to change every frame/step. What happens is they change at program start and just stop.

 

But when you make it xvar=xvar+1; it should change.

 

If u r using too many functions and most of them are using xvar then just make xvar as a static and global variable
otherwise just declare it as static in main

Then

Try the same code
it will work


Static means that u are instructing the variable to retain its value