Question

class Card
{
private:
  int face;
  char suit;
public:
  Card();
  Card(char, int);
  int getRank() { return face; }
  char getSuit() { return suit; }
  void setFace(int cardFace) { face = cardFace; }
  void setSuit(char cardSuit) { suit = cardSuit; }
};
Card::Card(char cardSuit, int cardFace)
{
  face = cardFace;
  suit = cardSuit;
}

class Player
{  
public:
  Player();
  vector<Card>allCards;
  vector<Card>hand;   //holds 7 cards
};

Player::Player()
{
  std::random_device seed;
  std::mt19937 rng(seed());
  for (int i = 1; i <= 13; i++)
  {
      Card c1('D', i), c2('C', i), c3('H', i), c4('S', i);
      allCards.push_back(c1);
      allCards.push_back(c2);
      allCards.push_back(c3);
      allCards.push_back(c4);
  }
  shuffle(std::begin(allCards), std::end(allCards), rng);
      for (int x = 0; x < 7; x++) {
          hand[x] = allCards.back(); <---------- Error here
          allCards.pop_back();
      }
}

我正在尝试使用课程创建一个游戏，在某些时刻我必须为每个玩家分配7张牌，这对我来说并不像我试图管理它那样。

我收到以下错误

Error: Thread 1: EXC_BAD_ACCESS (code=1, address=0x0)

Answer 1

您忘记初始化hand向量。默认情况下，它的大小为0，访问hand[x]超出范围。

如果你知道它有一个常量，你可以在Player构造函数的初始化列表中初始化它的大小。

Player::Player() : hand(HAND_SIZE) {
   ...
}

或者您可以更改代码以使用push_back()，因为hand为空，除非另有初始化。

hand.push_back(allCards.back());

错误：线程1：EXC_BAD_ACCESS（代码= 1，地址= 0x0）

1 个答案: