Question

可能重复：
initialize a const array in a class initializer in C++

这是一个新手问题。如何初始化常量整数数组类成员？我认为在相同的情况下，经典数组不是最佳选择，我应该使用什么而不是它呢？

class GameInstance{
    enum Signs{
        NUM_SIGNS = 3;
    };
    const int gameRulesTable[NUM_SIGNS][NUM_SIGNS]; //  how to init it?
public:
    explicit GameInstance():gameRulesTable(){};
};

Answer 1

在C ++ 11中，您可以在初始化列表中初始化const数组成员

class Widget {
public:
  Widget(): data {1, 2, 3, 4, 5} {}
private:
  const int data[5];
};

或

class Widget {
    public:
      Widget(): data ({1, 2, 3, 4, 5}) {}
    private:
      const int data[5];
    };

有用的链接：http://www.informit.com/articles/article.aspx?p=1852519

http://allanmcrae.com/2012/06/c11-part-5-initialization/

Answer 2

让它静止吗？

class GameInstance{
    enum Signs{
        NUM_SIGNS = 3};
    static const int gameRulesTable[2][2];
public:
    explicit GameInstance(){};
};

...in your cpp file you would add:
const int GameInstance::gameRulesTable[2][2] = {{1,2},{3,4}};

const数组类成员初始化

2 个答案: