What does return 0; means and where to use it ?

Question

return 0;

Answer 1

Usually, zero is returned to the calling function when the program was executed successfully.

Answer 2

If your function is of type int, then it must always return some value:
int main()
{
// some expression
return 0;
}

Answer 3

//This function is not zero:
#include <iostream>
using namespace std;

int timesTwo(int x) {
return x*2;
}

int main() {
cout << timesTwo(8) << endl;

cout <<timesTwo(5) << endl;

cout <<timesTwo(42) << endl;
}

Answer 4

That should return a function of determines the author of the program.

Answer 5

A function of type "int" ALWAYS returns an integer value. If you do not write "return" the function will still return some value. If you write "return", it will allow you to control this value (what are you waiting for ...) You can use a function like "void" if you do not need a return value from a function

Answer 6

This means to get desired results it's important to write funcfion type integer. Operator "return" shows only that this function returns. It is important to remember: a function of type integer always returns some value

Answer 7

In other words, this is the command for the program

Answer 8

its not something you need to be concerned with, its just ends the program after it has executed

Answer 9

what does this means?

Answer 10

why 0 not something else ?

Answer 11

Then what does 0 means and where to use that 0 ?

Answer 12

Usually return value contains code of error. 0 means that function completes without error.

Answer 13

this means there is no need to write return 0; or return result; or return a*b*c and so on anywhere?

Answer 14

this means to get desired results it's important to write return //something

Answer 15

explain what the operator return actually means?

Answer 16

some time we have to write return 0; and some time return" variable" ; Please explain this to me?