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

int main()
{
	int sum = 0;
	int x;
	ifstream inFile;
	
	inFile.open("test.txt");
	if (!inFile)
	{
		cout << " Unable to open file";
		return -1; //terminate with error
	}
	
	while (inFile >> x)
	{
		sum = sum + x;
	}
	
	inFile.close();
	cout <<  " Sum = " << sum << endl;
	return 0;
	
}