Casting:

If we had a decimal say 4.5 and tried to save it as an int ie:

int x=4.5;

We would get an error (possible loss of precision). But say we really want an int, we can say, yes, thats what we want by casting it. This just tells the computer we are okay losing the decimal portion. To do that we say:

int x = (int) 4.5;

This makes x equal 4.