// pgm17 INPUT FILES
// We want our C++ program to get input from a file that
// is stored on our disk, rather than a person typing
// each piece of input.
// 9/28/16
#include <iostream>
// include fstream to be able to use files
#include <fstream>
#include <cstdlib>
#include <string>
using namespace std;

int main()
{
    // this defines an input file stream object
    ifstream inFile; // similar to cin, its an identifier that you make up

    inFile.open("data.txt");
    // check whether input file opened successfully
    // if it did not work, pgm cannot get input, and exit
    if (!inFile) {
        cout << "file did not open successfully" << endl;
        exit(1);
    }

    // now use inFile the same way as cin
    int num;
    for (int i=0; i<5; i++) {
        inFile >> num;
        cout << num << endl;
    }
    inFile.close();
    return 0;
}

/* Create a text file with some numbers in it.
Write a C++ program that will read all of the numbers
in the file, print them to the screen, and add them up
and print the sum to the screen.

TIME PERMITTING:
Send all output both to the screen and to an output file.
*/