While: Keep Going Until…

Mission control counts down from 5 to 1, then launches. A while loop keeps repeating for as long as something stays true.

while (count > 0) { }

1. 1Set the count

   Start a variable at 5.

   let count = 5

2. 2Build the rocket

   Create a rocket.

3. 3Count down

   While count is bigger than 0, say the number and subtract 1.

4. 4Launch

   After the loop, fly up 250 steps.