While loop for factorial

I have been told to obtain the factorial of 13 using a while loop, and the solution given is the attached one. I don´t really understand why it's used that code, and would appreciate if someone could give me some explanations about it. Thanks!!

[Ameer Hamza]

Use breakpoint, run the code line by line, and check the values of variables at each step. You will clearly see what is happening.

[Javier Torrecilla Toledo]

Thank you so much for much answer! It has been very helpful!

Answer 1

[kumar Atishay]

Point your mouse cursor to number 5 (5th line of your code) ,click on that then you will see a red circle appears on that point.Now run the code onece more ,you will see a arrow appears on that circle along with that you will see that run command in editor window is changed ,click on the "step" option which means your code will run step by step.After every click follow the arrow and the value of facto and counter in workspace window.You will definitely able to get your code.

[Javier Torrecilla Toledo]

Thank you very much for spending your time on helping me! I have just starte dwith Matlab and it's very nice getting such a good and fast help!