1. Higher Computing
Using Loops

2. 1. Using For…Next Loop
For counter = 1 to 100
Print text$
Next counter

3. 2. Using For…Next Loop For counter = 2 to 20 step 2 Print counter
Next counter

4. 4. Using Do…Loop Until DO (Start loop)
Display message to ask for a number
Get number from keyboard
If number <> 0 then
Print number
End if
Loop Until number = 0

5. 5. Using Do…Loop Until Set password to STOP DO (Start loop)
Get guess from user
If guess is not equal to password then
error message
End if
Loop Until guess = password

6. 10. Using DO WHILE Set password to STOP Get guess from user
Do While guess <> password
Error message
Display message to ask for another guess
loop

7. The FOR ………NEXT loop is a fixed loop
ie the number of times that the instructions are executed is fixed at the start of the loop.
The DO………LOOP UNTIL and the DO WHILE loop are conditional loops – the number of times that the instructions are executed depends on a condition being met.
The DO………LOOP UNTIL tests the condition at the end
The DO WHILE tests the condition at the start