WHY THERE IS AN ERROR OF control reaches end of non-void function

#1

HERE IS THE CODE https://ide.codingblocks.com/s/645144

#2

at line 13 of your code you should return the check function not just call it.

#3

I hope I’ve cleared your doubt. I ask you to please rate your experience here
Your feedback is very important. It helps us improve our platform and hence provide you
the learning experience you deserve.

On the off chance, you still have some questions or not find the answers satisfactory, you may reopen
the doubt.