While Loops, Counters, and Infinite Loops

What one forgotten line turns a `while` loop infinite — and how do counters and user input make it stop on cue?

Finger exercises

Short drills on what this video just taught. Write the code, run the checks, and reveal the answer only if you are stuck.

0 / 5 passed

Exercise 1 of 5

Count the passes

A variable n starts at 5 and a counter count starts at 0.

Write a while loop that runs while n is greater than 0, subtracting 1 from n each pass. Count how many times the body runs and leave that count in count.

n = 5
count = 0
# your code here: loop while n > 0, decreasing n and counting each pass

n = 5
count = 0
# your code here: loop while n > 0, decreasing n and counting each pass

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⌘/Ctrl + Enter runs

count is a whole number

counts every pass of the loop

leaves n at zero, so the loop actually ended

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