is it really necessary to put return 0 at the and of a int main()?

Answer 1

no, you can put any number you want, 0 is usually used to show that you program made sucesfull end

Answer 2

i can see that here on sololearn compiler don't show any error if you delete return statment...

Answer 3

As pointed out by Jamie, Vukan, and in reference to:

http://www.stroustrup.com/bs_faq2.html#void-main

"... In C++, main() need not contain an explicit return statement. In that case, the value returned is 0... "

Answer 4

thanks

Answer 5

thx everyone