C++骰子游戏模拟掷两个骰子

Question

我是一个C++初学者，我需要创建一个骰子游戏模拟掷两个骰子。我对头文件的使用感到很困惑。但首先，为什么我需要返回骰子的票面号码？其次，int roll函数做什么？来重置价值观和面孔？如果是，默认值是多少？而最后一个函数骰子（int n）,我是否使用这个函数来控制骰子值的最大总和？函数必须有一个具有以下函数的类头文件：

class Dice{

private:
    int face;    // no. of faces of the dice
    int value;    // the face-value that shows up

public:
    int getFace()// returns the no. of face of the dice
    {
    };

    int getVal()
    {
        int dice1;
        int dice2;
        dice1 = rand() % 6 + 1;
        dice2 = rand() % 6 + 1;
    };    // returns the face value that shows up

    int roll();     // simulate the roll pf the dice, the  value field is set  and  returned.
    Dice();   // default constructor , a standard six-face dice is created with value = 1
    Dice(int size);  // create a dice of given size

};

Answer 1

希望这能按顺序回答您的问题:我能看到返回每个骰子的面数的唯一原因是通知用户当前正在掷哪个骰子。我在下面的代码中展示了一个这样的例子，其中我做了。getfaces（）和dtwo.getfaces（）。int roll（）函数和getVal（）应该是我所假设的相同的东西。我已经删除了getVal()，而是使用了roll（）。Dice()和Dice（int size）只是初始化每个骰子的面数。默认的骰子将有6个面，但用户可以掷一个超过6个的骰子，因此是int大小。

#include <iostream>
#include <cstdlib>
#include <time.h>

class Dice
{
    private:
        int faces; // no. of faces of the dice
        int value; // the face-value that shows up
    public:
        int getFaces() {return faces;} // returns the no. of faces of the dice
        int roll() // returns the face value that shows up
        {
            value = rand() % faces + 1;
            return value;
        }
        Dice() : faces(6) {}; // default constructor, create a dice of standard size
        Dice(int size) : faces(size) {}; // create a dice of given size
};

int main()
{
    srand( time(NULL) ); // Initialize random seed
    char yesNo;

    std::cout << "\nWould you like to roll two normal dice? (y/n)\n";
    std::cin >> yesNo;

    if ( yesNo == 'y' )
    {
        Dice dOne, dTwo;

        std::cout << "\nA dice with " << dOne.getFaces() << " faces rolled: " << dOne.roll() << '\n';
        std::cout << "A dice with " << dTwo.getFaces() << " faces rolled: " << dTwo.roll() << '\n';
    }
    else
    {
        int dFaces;
        std::cout << "\nHow many faces would you like each dice to have?\n\n";

        std::cout << "Dice 1: ";
        std::cin >> dFaces;
        Dice dOne(dFaces);

        std::cout << "Dice 2: ";
        std::cin >> dFaces;
        Dice dTwo(dFaces);

        std::cout << "\nA dice with " << dOne.getFaces() << " faces rolled: " << dOne.roll() << '\n';
        std::cout << "A dice with " << dTwo.getFaces() << " faces rolled: " << dTwo.roll() << '\n';
    }

    return 0;
}