For Loop CS Thinking Example 2
Follow the full solution, then compare it with the other examples linked below.
Example 2
mediumConvert this FOR loop to a WHILE loop: FOR i = 1 TO 5: OUTPUT i.
Solution
- 1 Step 1: Initialise: SET i = 1.
- 2 Step 2: Condition: WHILE i <= 5.
- 3 Step 3: Body + update: OUTPUT i. i = i + 1.
Answer
SET i = 1. WHILE i <= 5: OUTPUT i. i = i + 1.
Every FOR loop can be rewritten as a WHILE loop with explicit initialisation, condition, and update. FOR loops are syntactic sugar for this common pattern.
About For Loop
A control structure that repeats a block of code a specific number of times or once for each item in a collection. The loop variable is automatically set to each successive value in the range or collection, eliminating the need to manually update it.
Learn more about For Loop →