Hierarchical Records

• A structure where a structure is a member.
• I want to make a simple card game.
  • Sort of like war, but I don't have the ability to store a deck (yet)
  • Two players,
    • A name
    • A card
    • A score.
  • Each player is dealt a random card.
    • This is a many card deck, so the same card can repeat.
    • All suits are of the same value.
  • For up to n turns
    • The players compare their cards.
      • The player with the lowest card, loses it is given a new card.
      • The other player gets one point.
    • In the case of a tie, both players get a new card.
  • The player with the most points wins.
• I am going to use a the CardT from the previous notes.
• I am going to declare a PlayerT

  • struct PlayerT {
       string name;
       int score;
       CardT card;
    };
            

  • Note the CardT is a structure.
  • And the name is a string.
• Accessing is no problem, just repeatedly use the member selector.

  • PlayerT player;
    
    player.name = "Bob";
    cout << player.name << "'s first initial is " << player.name[0] << endl;
    player.card.value = 11;
    player.card.suit = SuitT::DIAMOND;
            

  • Look at WarGame.cpp.
• There is really no limit, we can nest structures as deep as we wish.
• But it becomes more and more important to pass by constant reference.