In this program

Question

1.#include<iostream>
2. using namespace std;
3.void printsomething() {
4. cout<<"hello world";
5.}
6.int main() {
7. printsomething();
8. return 0;
9.}
here the 8th line has no meaning in the sense that even if i remove it or keep it. i always get the same output. why plis help

Answer 1

i.e

void Afunction() {
cout << "inside a function" << endl;
}

const int aGlobal = 5; // outside

int main() {
cout << "inside main" << endl;
aFunction();
return 0;
}

Answer 2

return 0 will be added automatically by the compiler if it is missing.

It is used to return a value to main. which reports to the operating system if the program exited normally or not.

Answer 3

you 'should' but only for the main function.
If you forget it is added for you

Answer 4

yup it will add return 0 explicitly

oops I'm late . Nice ans @jay

Answer 5

jay does that mean that i always need to put return 0; everytime in my codes.

Answer 6

whatever enclosed within the curly braces {} belongs to the respective function or the class (means is the inner side ) whereas outside the braces gives u the outer side of the function or class

Answer 7

nope even if u dont the compiler will do it for you

Answer 8

ok thanks

Answer 9

jay and nirmal plis tell me what is inside and outside of a function or class. is it the inner side enclosed by the curly braces.

Answer 10

thank q

Answer 11

thanks jay