Question

我有一个带有两个不同类的代码（在主程序类旁边）。第一类叫做“猫”，看起来像这样：

class cat
{
    private string name;
    private float weight;
    private float speed;
    static private int counter;

    //-----------------------------------------------
    public cat()
    {
        counter++;
    }

    public static int getcounter()
    {
        return counter;
    }
    //----------------------------------------------
    public void setname(string name)
    {
        this.name = name;
    }

    public void setweight(float weight)
    {
        this.weight = weight;
    }

    public void setspeed(float speed)
    {
        this.speed = speed;
    }
    //-----------------------------------------------
    public string getname()
    {
        return name;
    }

    public float getweight() 
    {
        return weight;
    }

    public float getspeed()
    {
        return speed;
    }
}

第二个类称为“ zoo”，它继承了“ cat”类，如下所示：

class zoo : cat
{
    public string[] arcats;
    //--------------------------------------------------
    public void addcats(int counter)
    {
        arcats = new string[counter];
    }

    public void setcats(int counter, string cat)
    {
        arcats[counter] = cat;
    }
    //-----------------------------------------------------
    public bool iscatsfull(bool limit)
    {
       limit = false;
        if (getcounter() > 20)
        {
            return limit;
        }
        else
            return true;
    }
    //-----------------------------------------------------
    public int Getcounter()
    {
        return getcounter();
    }
}

主程序如下：

class Program
{
    static void Main(string[] args)
    {
        cat l = new cat();
        l.setweight(50.5f);
        cat t = new cat();
        t.setweight(67.7f);
        cat c = new cat();
        c.setweight(54.3f);

    }
}

我要在这里做的是在“ zoo”类中创建一个数组，该数组将捕获所有“ cat”对象（布尔函数是确保数组中不超过20个对象）。在拥有一个有效的数组之后，我想在“ zoo”类中创建两个新函数，一个用于计算数组中所有猫的平均体重，另一个与速度相同。

我尝试使用此功能，但不起作用：

   public float Weightavg()
    {
        return (cat.getweight())/ getcounter();
    }

我尝试在函数中添加“ static”关键字，但这只是弄乱了代码的另一部分。谁能告诉我如何使用已经使用的代码使该功能正常工作？当然，如果我不知道代码中有任何问题，我也很乐意听到。在此先感谢您抽出宝贵时间帮助^^

Answer 1

很好的问题，我马上注意到了一些事情。一种是您的所有方法名称都应为CarmelCased，即setname应该为SetName，而getname应该为GetName，等等。

您对iscatsfull的逻辑也不正确。当true数组位于arcats上方时，您似乎应该返回20。看起来您应该将arcats中的猫另存为Cat对象，并且不将其另存为strings。

counter中的cat是无用的，因为它不应该生活在Cats类中，而应该生活在Zoo类中。

您的Cat类可以重构为：

public class Cat
{
    private string name;
    private float weight;
    private float speed;

    public Cat()
    {
        this.name = "";
        this.weight = 0.0;
        this.speed = 0.0;
    }

    public void SetName(string name)
    {
        this.name = name;
    }

    public void SetWeight(float weight)
    {
        this.weight = weight;
    }

    public void SetSpeed(float speed)
    {
        this.speed = speed;
    }

    public string GetName()
    {
        return this.name;
    }

    public float GetWeight() 
    {
        return this.weight;
    }

    public float GetSpeed()
    {
        return this.speed;
    }
}

您的动物园课程可以是：

public class Zoo
{
    public Cat [] arcats;

    public void CreateZoo(int counter)
    {
        arcats = new Cat[counter];
    }

    public void AddCat(int counter, Cat cat)
    {
        arcats[counter] = cat;
    }

    public bool IsZooFull()
    {
        if (arcats.Length > 20)
        {
            return true;
        }
        else
        {
            return false;
        }
    }

    public double GetAvgWeight()
    {
        double totalWeight = 0.0;
        foreach(Cat cat in arcats) // Loop through all the cats in arcats and add all their weights
        {
            totalWeight += cat.GetWeight();
        }
        return totalWeight / arcats.Length; // Divide total weight by number of cats
    }
}

您现在可以像这样在Main中与他们合作：

class Program
{
    static void Main(string[] args)
    {
        Cat cat1 = new Cat();
        cat1.SetWeight(50.5f);

        Cat cat2 = new Cat();
        cat2.SetWeight(67.7f);

        Cat  cat3 = new Cat();
        cat3.SetWeight(54.3f);

        Zoo z = new Zoo();
        // Create new Zoo with arcats of length 3
        // z.CreateZoo(21);
        z.CreateZoo(3);
        // Add the three Cats to the Zoo
        z.AddCat(0, cat1);
        z.AddCat(1, cat2);
        z.AddCat(2, cat3);

        Console.WriteLine("Checking if Zoo is full: " + z.IsZooFull()); // false
        Console.WriteLine("Average weight of Cats in Zoo: " + z.GetAvgWeight());
    }
}

编写将两个不同类的变量汇总在一起的函数时遇到麻烦

1 个答案: