What if we want the
for loop to log
1, and then
0? With simple modifications to the expressions, we can make our loop run backward!
To run a backward
for loop, we must:
- Set the iterator variable to the highest desired value in the initialization expression.
- Set the stopping condition for when the iterator variable is less than the desired amount.
- The iterator should decrease in intervals after each iteration.
We’ll practice by changing the
for we wrote previously to now go in reverse. When writing/changing loops, there is a chance that our stopping condition isn’t met and we get a dreaded infinite loop which essentially stops our programming from running anything else! To exit out of an infinite loop in an exercise, refresh the page - then fix the code for your loop.
for loop that loops backwards printing
0 to the console. Use the
>= comparison operator in your stopping condition and the
-- operator in your iteration statement.