#include <iostream> using namespace std; int main() { cout << "Hello world!"; return 11; } is something wrong

Answer 1

If you look at how the main function is defined:
int main() { return 0; }

^At the beginning, 'int' is the return type of the function, so it expects that you return an 'int.' I believe in the newer standards it may no longer be required, as it's implied instead, but I haven't messed with it in awhile so don't quote me on that.

For the return status, 0 is intended for successful exit status. 1 (or any other number than 0) is intended for a failed exit status.

Answer 2

In this scenario, the main function's return statement is simply returning an exit status to your OS. It's purpose won't be noticeable to you for what you're doing here.

Answer 3

try it on code playground :)

Answer 4

Since the return statement is part of the main function (entry/exit point of the program), it's returning back to the OS itself (which is what called the program/main function).

Answer 5

return "11" or return 0 is same ?
i am getting the same output all the time

Answer 6

ohk why they had written" return 0" they could also write " return"

Answer 7

so do you mean that in this code by return is must as it takes the control out of the function