enum in C++

enum_test.cpp

using namespace std;

enum Color {
  red, green, blue,
  white = 10, black = white,
  silver, gold = 99
};

int main()
{
  Color color = red;
  cout << "red is " << color <<endl;

  color = green;
  cout << "green is " << color <<endl;

  color = blue;
  cout << "blue is " << color <<endl;

  color = white;
  cout << "white is " << color <<endl;

  color = black;
  cout << "black is " << color <<endl;

  color = silver;
  cout << "silver is " << color <<endl;

  color = gold;
  cout << "gold is " << color <<endl;

  return 0;
}