Why do my programm doesn't work ?

Question

#include <iostream>
using namespace std;

int ajoutedeux(int nr){
cin>>nr;
int resultat = nr + 2;
cout<<"Le resultat est"<<resultat<<endl;
return resultat;
}

PS : I'm french :)

Answer 1

I would structure the code like this:

https://code.sololearn.com/c2JzgxXwhJ2j/?ref=app

But it is just the way I like things :)

Answer 2

:) Tobias is correct, they both provide the same result in this context

I just like portability and I believe functions should be independent as possible. But as I said, earlier, it is just the way I like things

Answer 3

@Valkryion
You need to declare a main function as well and call ajoutedeux in that for ajoutedeux to work.

Main serves as the entry point for all C++ applications and it is necessary for all C++ programs to have a main function.

So the final code will be :

#include <iostream>
using namespace std;

int ajoutedeux(int nr){
cin>>nr;
int resultat = nr + 2;
cout<<"Le resultat est"<<resultat<<endl;
return resultat;
}
int main()
{
int nombre;
ajoutedeux(nombre);
}

Answer 4

It should be int main(int nr) in the place of int ajoutedeux(int nr).
The main method is required by the c++ code to work. You should remove your int ajoutedeux and then add int ain in it's place.

Answer 5

I understand, so i always need my main function to call the function that i created.

Answer 6

uuuuuhhhhhh I prefer the @Tobias code :)

Answer 7

OK 😄

Answer 8

Thanks to you i did this :
https://code.sololearn.com/cTa0tqm5QJtd/?ref=app

Answer 9

But this is a function !
I want that my function(ajoutedeux) add two at the variable "nr"

Answer 10

https://code.sololearn.com/cRTv3vs2o1p0/?ref=app

Answer 11

Thank you a lots !!!