Answer:

NUM started out at 0, and the DO WHILE statement let the loop body execute, so "0" was printed. Then NUM was increased by 2 in the LET statement, so the next time the loop body executed, "2" was printed. NUM kept increasing by two until it was too big for the DO WHILE statement.

More Practice

Let's practice with another loop. Remember to look at these three things to figure out what the loop does:

The first number goes in the initializing LET statement.
The last number is tested for in the DO WHILE statement.
The amount to increase the number each time is in the LET statement in the loop body.

' Loop with increase amount of 3
'
LET NUM   =  3      'First Value

DO WHILE NUM <= 15   'next two statements execute if NUM is less than or equal to 15
  PRINT NUM            
  LET NUM = NUM + 3  'increase NUM by two
LOOP 

END

QUESTION 22:

What will this new program print on the monitor screen? Be careful with the first two numbers.