#include <iostream>
 
int add(int x, int y)
{
    // add the numbers x and y together and return the sum
    std::cout << "Running calculator ...\n";
    return (x+y);
}
 
int main()
{
    /* this program calls an add() function to add two different
       sets of numbers together and display the results. The
       add() function doesn't do anything unless it is called by
       a line in the main() function. */
    std::cout << "What is 867 + 5309?\n";
    std::cout << "The sum is " << add(867, 5309) << "\n\n";
    std::cout << "What is 777 + 9311?\n";
    std::cout << "The sum is " << add(777, 9311) << "\n";
    return 0;
}