Data Types

A data type describes a set of values in which a variable can store with a set of operations which can be performed on that variable. C++ has five basic built in data types: -

Character (char) Integer (int)

Floating point (float)

Double floating point (double) Valueless (void)

Void has three uses: -.

To define explicitly a function as returning no value.

To describe explicitly a function as having no parameters.

To make generic pointers.

C++ also supports various aggregate categories including structures, unions, enumeration and user defined types.