include <iostream>
  include <fstream>
  
  using namespace std;
  
  int main(int argc, char** argv)
  {
    ofstream fout("test.out");
  
    // 1. output the string "12345"
    fout << "12345";
  
    // 2. verify that the marker is at the end
    long curPos = fout.tellp();
    if (curPos == 5) {
      cout << "Test passed: Currently at position 5" << endl;
    } else {
      cout << "Test failed: Not at position 5" << endl;
    }
  
    // 3. move to position 2 in the stream
    fout.seekp(2, ios_base::beg);
  
    // 4. output a 0 in position 2
    fout << 0;
    fout.flush();
  
    // 5. open an input stream on test.out
    ifstream fin("test.out");
  
    // 6. read the first token as an integer
    int testVal;
    fin >> testVal;
  
    // 7. confirm that the value is 12045
    if (testVal == 12045) {
      cout << "Test passed: Value is 12045" << endl;
    } else {
      cout << "Test failed: Value is not 12045 (it was " << testVal << ")" << endl;
    }
  }