Hi JayPea,

In that exercise, they just wanted to teach, how we can develop logic using an If, switch and how we can implement ad -hoc loop. 

You can opt client action and call it in your screen Factorial action.  So, Instead of choosing server action, you can make client action to calculate factorial. 

Thank you

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Thanks Rahul,

It was a good exercise to effectively create a while loop. 

My question was more about the rationale behind why a server action was used? It could have been done with a client action.

Was it just to demonstrate how to call a server action from a client action or was there a deeper architectural reason for it. 

Thanks