Number theory -problem of prime visits

#1

i am getting a segementation fault . please check my code and tell me whats wrong with it. i am not able to do any question of prime sieve i dont understand why?

#2

Save your code on ide.codingblocks.com and share its link.

#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.