/*
 * This program flips all the bits in a file
 */
#include <iostream>
#include <fstream>
#include <string>

using namespace std;

int main(int argc, char** argv) {
  if(argc < 3) {
    cout << "Flips all the bits in a file" << endl;
    cout << "Usage: " << argv[0] << " <inputfile> <outputfile>" << endl;
    return 0;
  }

  char n;
  char k;

  ifstream infile (argv[1]);
  ofstream outfile (argv[2]);
  if(infile.is_open() && outfile.is_open()) {
    while(!infile.eof()) {
      infile.get(n);
      k = n ^ 0xFFFFFFFF;
      outfile << k;
    }
  } else {
    cout << "Couldn't open input file." << endl;
  }


  infile.close();
  outfile.close();

  return 0;
}