Nested loops

This is used when we want to do something multiple times, and then do that multiple times. Examples are:

• printing a 2-dimensional table
• printing the average mark of several exams

Programming process:

1. design and test inner loop
2. design and test outer loop

An example program shows how to print a two-dimensional table: the times table for the numbers 1-10. The outer loop handles each row in turn; the inner loop handles the columns within each row.