Add 2 numbers (Class/Object C++)

//============================================================================
// Name        : lol.cpp
// Author      : Bidyut
// Version     :
// Copyright   : No rights reserved
// Description : Hello World in C++, Ansi-style
//============================================================================

#include <iostream>

using namespace std;

void helloWorld();

int main()

{
    int a;
    int b;
    int sum;

    cout << "Enter first number \n";
    cin >> a;

    cout << "Enter second number \n";
    cin >> b;

    sum = a + b;

    cout << "The sum of the given numbers is (" << sum << ")" << endl;


    if (sum > 10) {
            cout << "Bidyut Is Awesome!!! \n\n";
        }

    helloWorld();

    return 0;
}

void helloWorld(){
    cout << "Test of new function :-)";
}