/*
    fileStuff.cpp
    Dave Klick
    CIS 150
    2017-03-21
    
    Demonstration of file techniques.
*/

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

int main() {
    int num;
    
    string fname("march21.txt");
    // Write to a text file (erase current file contents)
    ofstream outfile(fname.c_str());
    // Check for error
    if (!outfile) {
        cout << "Error: File " << fname << " failed to open\n";
        return EXIT_FAILURE;
    }
    
    outfile << 7 << '\n';
    outfile << 5 << '\n';
    outfile << 3 << '\n';
    outfile << 22 << '\n';
    outfile << 35 << '\n';
    outfile << 16 << '\n';
    outfile << 4 << '\n';
    outfile << 99 << '\n';
    outfile << 53 << '\n';
    outfile << 70 << '\n';
    outfile << -2 << '\n';
    
    outfile.close();

    // Write to a text file (append to current file contents)
    ofstream outfile2(fname.c_str(), ios::app);
    // Check for error
    if (!outfile2) {
        cout << "Error: File " << fname << " failed to open\n";
        return EXIT_FAILURE;
    }
    
    outfile2 << 42 << '\n';
    
    outfile2.close();

    // Read from a text file
    ifstream infile(fname.c_str());
    // Check for error
    if (!infile) {
        cout << "Error: File " << fname << " failed to open\n";
        return EXIT_FAILURE;
    }
    
    // Read until a read fails to work
    while (infile >> num) {
        cout << "Read in " << num << '\n';
    }
    
    infile.close();

    
    return EXIT_SUCCESS;
}