// output the result of x + y into a file 'sum.txt'
#include <math.h>
#include <iostream>
#include <fstream>
using namespace std;

const int x = 5, y = 11;
int main()
{
  ofstream outfile("sum.txt");// open output file sum.txt
  outfile << x + y << endl;   // output to file
  outfile.close();            // close file
}