After:

// Prints whether a driver will pay peak or off-peak toll
int main()
{
  // Variable declarations
  int hour;
  bool isPeak;

  // Input the hour (0-23)
  cout << "Enter the hour (0-23)" << endl;
  cin >> hour;

  // Compute whether peak hour (7 - 9 and 16 - 18)
  if( hour >= 7 && hour <= 9 )
     isPeak = true;
  else if( hour >= 16 && hour <= 19 )
     isPeak = true;
  else
     isPeak = false;

  // Print the type of toll paid
  if( isPeak )
     cout << "You will pay peak toll" << endl;
  else
     cout << "You will pay reduced toll" << endl;

   return 0;
}