Variables are the key to any program. There are variables called registers inside every CPU (Central Processing Unit). Every program ever written uses some form of variables. Believe it or not, the way you use variables can significantly impact your program. This section is a very simple introduction to what variables are, and how they're used in programs. Usually, a variable implies a memory location to hold one instance of one specific type. What this means is that if there is an integer variable, it can only...
