What is the warning in this code?

Question

This code is about calculating prime number by using function but it has a warning... i don't know what it is
https://code.sololearn.com/cI9HS2OAaf97/?ref=app

Answer 1

Fatemeh

What if your loop and if block doesn't execute then your function will not return anything which should return because return type is int so you should return 0 after end of for loop

Answer 2

A͢J Thank u so much

Answer 3

Fatemeh

Your program will always return true because of (i < n && c == 0) and if(c == 0)

Answer 4

A͢J Yes... you are true

Answer 5

Also the logic is not true. You cannot find prime number in this way.

To find a prime number, we have to check if that number is perfectly divisible by any integers between 2 and the root of our number. If it is perfectly divisible even by 1 number , it is not prime.

https://code.sololearn.com/cNQa8jPCopGv/?ref=app