Return.

Question

What is the different between ' Return 0 ' ,
' Return 1 ' and ' Return TRUE'

Answer 1

If the function is of type bool the return value must have this type. This can be true or false.
An example: This test is an int is even or uneven.
bool isEven(const int n){
if(n%2){
return true;
}
else{
return false;
}
}
The main function must not have type bool. It hast always type int!

Answer 2

return is used to let a function or method returning a value. Depending in the function this value has a different type.
If your function is of type int it must return ints (int main() is such a function but main must not return anything anymore). If yohr function is of type bool it must return a bool (return TRUE for example).

Answer 3

The return 0/1 thing for showing an error is jus a convention. It has nothing to do with the language itself. Programmers use to let main return 0 if everything went good and 1 if an error occured. But as I said this is a convention and not a language feature.

Answer 4

Thanks so much!

Answer 5

So when the main function is bool the ending mist be ' Return TRUE '

Answer 6

Is it?

Answer 7

Sorry but the ' return false ' still dont understand. Guess i need to continue learning.

Answer 8

return 0 means you tell the program to interrupt without showing any error, as the programm stopped due to an error, but return 1 is the opposite, it means stop the programm and tell the User that it was a problem somewhere.