#scope of variables

Numbers and characters are stored in variables. Variables are processed by the program. Variables can be modified by expressions. Variables can be assigned a value using the keyboard.

The following information components are associated with a variable:

The name symbolizes the location of the value.

>>The value stored in the memory location. >>The address that exactly describes the position in the memory of the computer. >>An address is always a hexadecimal value for a memory location in the computer's memory. >>The data type that specifies the format for the value to store.

A data type is the internal assignment of the bit sequence of a value.