include <fstream>
  include <iostream>
  include <vector>
  include <string>
  include <stdexcept>
  
  using namespace std;
  
  void readIntegerFile(const string& fileName, vector<int>& dest)
    throw (invalid_argument, runtime_error)
  {
    ifstream istr;
    int temp;
  
    istr.open(fileName.c_str());
    if (istr.fail()) {
      // We failed to open the file: throw an exception
      string error = "Unable to open file " + fileName;
      throw invalid_argument(error);
    }
  
    // Read the integers one-by-one and add them to the vector
    while (istr >> temp) {
      dest.push_back(temp);
    }
  
    if (istr.eof()) {
      // We reached the end-of-file.
      istr.close();
    } else {
      // Some other error. Throw an exception
      istr.close();
      string error = "Unable to read file " + fileName;
      throw runtime_error(error);
    }
  }
  
  int main(int argc, char** argv)
  {
    vector<int> myInts;
    const string fileName = "IntegerFile.txt";
  
    try {
      readIntegerFile(fileName, myInts);
    } catch (const exception& e) { // BUG: catching superclass first!
      cerr << e.what() << endl;
      exit (1);
    } catch (const invalid_argument& e) {
      // take some special action for invalid filenames
    }
  
    for (size_t i = 0; i < myInts.size(); i++) {
      cout << myInts[i] << " ";
    }
    cout << endl;
  
    return (0);
  }