c# OOP打印结果

本文关键字：结果 打印 OOP | 更新日期: 2023-09-27 18:14:31

我是visual studio c#的新手，我试图使用OOP打印结果我想将结果打印为:

你好。我是一只可卡犬。汪!我是(大或小)，颜色是白色的，我有四条腿。

由于我设置的值是10，所以它总是很小…

下面是我的代码: 
public Dog()
        {
            barkSound = "Woof!";
            breed = "cocker spaniel";
            dogHeight = 10;
            dogColour = "white";
            noOfLEgs = 4;
        }
  public string GetSpeech()
    {
        dogSpeech = "Hello. I am a " + breed + ". " + barkSound + " I'm " 
                    + dogHeight + ", Colour is " + dogColour + ", I have " + noOfLEgs +" legs" ;
        return dogSpeech;
    }
    
    private bool IsBig(int dogHeight)
    {
        if (dogHeight < 50)
        {
            return false;
        } else
        {
            return true;
        }
    }

我应该修改"IsBig"方法或另一种更好的方式来打印预期的结果?

c# OOP打印结果

有两种方法。

您可以将IsBig重命名为GetSizeDescription并返回字符串:

private string GetSizeDescription() {
    if (dogHeight < 50)
    {
        return "Small";
    } else
    {
        return "Big";
    }
}

用法:

public string GetSpeech()
{
    dogSpeech = "Hello. I am a " + breed + ". " + barkSound + " I'm " 
                + GetSizeDescription() + ", Colour is " + dogColour + ", I have " + noOfLEgs +" legs" ;
    return dogSpeech;
}

或者，可以保持IsBig方法不变，将GetSpeech方法改为:

public string GetSpeech()
{
    dogSpeech = "Hello. I am a " + breed + ". " + barkSound + " I'm " 
                + (IsBig() ? "Big" : "Small") + ", Colour is " + dogColour + ", I have " + noOfLEgs +" legs" ;
    return dogSpeech;
}

可以修改方法

private string GetSizeString(int dogHeight)
{
    if (dogHeight < 50)
    {
        return "Small";
    }
    return "Big";
}

然后直接

public string GetSpeech()
{
    return "Hello. I am a " + breed + ". " + barkSound + " I'm " 
                + GetSizeString(dogHeight) + ", Colour is " + dogColour + ", I have " + noOfLEgs +" legs" ;
}

这是您的完整代码。

public class Dog
{
    public Dog()
    {
        barkSound = "Woof!";
        breed = "cocker spaniel";
        dogHeight = 10;
        dogColour = "white";
        noOfLEgs = 4;
    }
    public string barkSound { get; private set; }
    public string breed { get; private set; }
    public string dogColour { get; private set; }
    public int dogHeight { get; private set; }
    public int noOfLEgs { get; private set; }
    public string GetSpeech()
    {
        string dogSpeech = "Hello. I am a " + breed + ". " + barkSound + " I'm "
                    + (IsBig(dogHeight) ? "Big" : "Small") + ", Colour is " + dogColour + ", I have " + noOfLEgs + " legs";
        return dogSpeech;
    }
    private bool IsBig(int dogHeight)
    {
        if (dogHeight < 50)
        {
            return false;
        }
        else
        {
            return true;
        }
    }
}

呼叫应该是这样的。

Dog dog = new Dog();
string speech = dog.GetSpeech();

将dogHeight替换为(IsBig(dogHeight) ? "Big" : "Small")，就这样。

你不应该修改IsBig方法。也许你应该让它成为一个属性，但这不是很重要。你可以创建一个新方法:

private string GetSizeText(bool isBig)
{
   if (isBig)
     return "Big";
   return "Small";
}
那么你的GetSpeech看起来像: 
  public string GetSpeech()
    {
        dogSpeech = "Hello. I am a " + breed + ". " + barkSound + " I'm " 
                    + GetSizeText(IsBig(dogHeight)) + ", Colour is " + dogColour + ", I have " + noOfLEgs +" legs" ;
        return dogSpeech;
    }

这是一个简单的解决方案。您还可以创建一个以Big和Small作为值的枚举，并使用ToString();打印此枚举值。

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