C++ Tutorial 13 - Reading from files

#include <iostream>
#include <fstream>
using namespace std;

int main()
{
    ifstream reader("file3.txt");
    int a,b;
    if(reader.is_open())
    {
        reader >> a;
        reader >> b;

        cout << "Sum of variables a and b is " << a + b << endl;
    }
    else
    {
        cout << "Error" << endl;
    }
    reader.close();
    system("pause");
    return 0;
}