INTEGER is one of five intrinsic data types. The others are
The programmer can define additional (derived) data types.
i and j are
examples of variables. A variable is a name
that is used to identify stored data. The data type for the variable (INTEGER
in this case) specifies the kind of data that is stored. INTEGERs are used to
represent whole numbers that may be signed but which do not have a fractional
part. INTEGERs are often used for counting purposes. They have the advantage
that they are stored exactly without round-off error.
This is an example of a declaration. Declarations belong to the set of
statements called specification statements that must come before any executable
statements in the program.