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

void fin_file(ifstream& fin, ofstream& fout, char& next);
void fout_file(ifstream& fin, ofstream& fout, char& next);
void write_file(ifstream& fin, ofstream& fout, char& next);
void closing_message();

int main()
{
    char next;
    ifstream fin;
    ofstream fout;
    fin_file(fin,fout,next);
    closing_message();
    return 0;
}

void fin_file(ifstream& fin, ofstream& fout, char& next)
{
    fin.open("input.txt");
    if(!fin.fail()) {
        fout_file(fin, fout, next);
    }
    return ;
}

void fout_file(ifstream& fin, ofstream& fout, char& next)
{
    fout.open("output.txt");
    if(!fout.fail()) {
        write_file(fin, fout, next);
    }
    return ;
}

void write_file(ifstream& fin, ofstream& fout, char& next)
{
    fin.get(next);
    while(next != '\n')
    {
        fout.put(next);
        fin.get(next);
    }
    fin.putback(next);
}

void closing_message()
{
    cout << "End of program\n";
}