what happened here?

Question

how we got 12345 ??
https://code.sololearn.com/cnNj73k5bo7x/?ref=app

Answer 1

You're using recursion.

You have a base case which is if (a<= 0) and then you're calling the function while decreasing the input variable, which is essentially making it countdown. It can be compared to something such as a loop.