• Integer - A whole number - (10)
• Real - A number with a fractional part (decimal) - (10.35)
• Boolean - Either True or False
• String - Several characters, word or sentence.
• Char - A single alphanumeric character.
• Constant - A program value that does not change (eg. PI = 3.14)
• Variable - A value that might change later, such as a students average mark.

Sequence

Selection

Repetition - Iteration

Totalling

Counting