Programming - data types

Question 1

What are the data types for programming?

Answer 1

Character - a single letter or number 
String - A combination of letters, numbers, symbols and spaces
Integer - A whole number
Real - A number with fractions
Boolean - True or false

Question 2

Why should code be annotated for maintenance?

Answer 2

Code should be annotated for maintenance because this will make it easier for others to make changes at a later data.
Changes may be needed to remove bugs that are found or upgrade the program to add more functionality.