Question

我想采用先前初始化的对象数组，并能够将其设置为类变量。

我对指针或编码风格没有很多经验。

这是我正在处理的代码片段，它将问题隔离开来：

#include<cstdlib>
#include<iostream>

using namespace std;

class GameBoard {
        string players[];
        int total_players;
    public:
        GameBoard (string given_players[]) {
            players = given_players;
            total_players = sizeof(given_players)/sizeof(*given_players);
        }
};

int main () {
    string players[] = {
        "Jack",
        "Jill"
    };
    GameBoard gb(players);
    return 0;
}

目前，此代码输出错误：

In constructor 'GameBoard::GameBoard(std::string*)':
[Error] incompatible types in assignment of 'std::string* {aka std::basic_string<char>*}' to 'std::string* [0] {aka std::basic_string<char>* [0]}'

Answer 1

更好的方法

#include <vector>
#include <string>

class GameBoard {
    std::vector<std::string> players;
    int total_players;
public:
    GameBoard (const std::vector<std::string> & p_players):
        players(p_players),
        total_players(p_players.size())
    {
    }
};

然后

int main()
{
    std::vector<std::string> players{"jill", "bill"}; //if C++11 is not available you can use push_back()
    GameBoard b{players};
    return 0;
 }

如何在C ++中将对象属性设置为先前初始化的Array

1 个答案: