Three Things a Loop must Do

That was an easy question. But there is a good chance that you got it wrong. This is because there are three things you have to think about to get the correct answer:

• The starting value of the counter.
• How the counter is tested in the WHILE.
• How the counter is incremented in the body of the loop.

The statements that do these things are spread out in the program:

' Counting Loop
'
LET COUNT = 0            'Statement 1: start the counter
'
DO WHILE COUNT <= 2      'Statement 2: test the counter
  PRINT COUNT            'Statement 3
  LET COUNT = COUNT + 1  'Statement 4: increment the counter
LOOP 
END

But all you want to do (in this program) is to count 0, 1, 2.