Integer Representation

So far, we have used the Integer type for most of our programs. The mathematical definition of ``integer'' includes zero, all positive whole numbers and all negative whole numbers. In other words, there is such thing as the largest integer or the smallest integer.

However, in a Pascal program, a variable of Integer type has a limited range of number that it can represent. This is due to the internal representation of an Integer in a computer. This chapter discusses this representation and how it determines the range of values that a variable of Integer type can represent.