#include <iostream>
#include <fstream>
using namespace std;
 
int main (int argc, char *argv[]) {  
  string filename;
  cout << "Enter output filename: ";
  cin >> filename;
  ofstream outfile(filename.c_str(), ios::trunc);
  if (!outfile.is_open()) {
    cout << "[Write] Unable to open " << filename;
    return -1;    
  }
  outfile << "I hate pointers   in C";
  outfile.flush();
  
  ifstream infile(filename.c_str());
  if (!infile.is_open()) {
    cout << "[Read] Unable to open " << filename;
    return -1;    
  }
  string line;
  getline( infile, line );
  cout << line << endl;  
    
  outfile.seekp(2);
  outfile << "love";
  outfile.seekp(1, ios::cur);
  outfile << "references";
  outfile.seekp(0,ios::end);
  outfile << "++" << endl;
  
  infile.seekg(0, ios::beg);
  getline( infile, line );
  cout << line << endl;  
}