21. Vector operations, cont.

• Once you get your data into a vector, you can easily manipulate it:

  
  // compute mean (average) and median temperatures:
  int main()
  {
      vector< double > temps;      // temperatures in Fahrenheit, e.g. 64.6
      double temp;
      while ( cin >> temp ) {
          temps.push_back( temp ); // read and put into vector
      }
      double sum = 0;
      for ( int i = 0; i < temps.size(); ++i ) {
          sum += temps[i]; // sums temperatures  
      }
  
      cout << "Mean temperature: " << sum / temps.size() << endl;
      sort( temps.begin(), temps.end() );
      cout << "Median temperature: " << temps[ temps.size() / 2 ] << endl;
  }