FAQ: Loops: Lesson - while Loop

This community-built FAQ covers the “while Loop” exercise from the lesson “Loops: Lesson”.

Paths and Courses
This exercise can be found in the following Codecademy content:

Learn C

FAQs on the exercise while Loop

There are currently no frequently asked questions associated with this exercise – that’s where you come in! You can contribute to this section by offering your own questions, answers, or clarifications on this exercise. Ask or answer a question by clicking reply (reply) below.

If you’ve had an “aha” moment about the concepts, formatting, syntax, or anything else with this exercise, consider sharing those insights! Teaching others and answering their questions is one of the best ways to learn and stay sharp.

Join the Discussion. Help a fellow learner on their journey.

Ask or answer a question about this exercise by clicking reply (reply) below!
You can also find further discussion and get answers to your questions over in #get-help.

Agree with a comment or answer? Like (like) to up-vote the contribution!

Need broader help or resources? Head to #get-help and #community:tips-and-resources. If you are wanting feedback or inspiration for a project, check out #project.

Looking for motivation to keep learning? Join our wider discussions in #community

Learn more about how to use this guide.

Found a bug? Report it online, or post in #community:Codecademy-Bug-Reporting

Have a question about your account or billing? Reach out to our customer support team!

None of the above? Find out where to ask other questions here!

I’m a learner of C programming. Logically solving problems but get stuck in the below question. Please Help me solve this.

Now change your while loop to go backward from 9 and stop at 0. Your new output should look like this:

#include <stdio.h> int main() { int i = 9; // Write a while loop here: while (i<10) { printf("%d\t%d\n", i, i*i); i=i-1; } }

I made this above code, but it’s not working. What would be some best possible answers?

Have a second look at your condition, when should the loop stop?

1 Like
#include <stdio.h> int main() { int i = 9; int square; //by decrementing variable i , you need to have while loop until comes to 0. Always write i--. not i=i-1 while(i >= 0){ square = i * i; printf("%d\t%d\n",i,square); i--; } }