struct Cat（string，string，bool，bool）'必须声明一个主体，因为它没有被标记为abstract，extern或局部

Question

Here's my code, I have no idea what is wrong and why does the compiler say that

 using System;
 using System.Collections.Generic;
 using System.Linq;
 using System.Text;

 namespace _11._2
{
class Cat
{
    private string name = "cat";
    private string type = "gizei";
    private bool water = false;
    private bool yalel = false;
    public Cat(string name, string type, bool water, bool yalel);
    public string meow()
    {
        if (yalel)
            return "Meow Meow Meow";
        else
            return "Meow";
    }

    public bool thirsty()
    {
        return water ? true : false;
    }

    public string info()
    {
        return "My name is " + name + " and my type is " + type;
    }
}
}

I tried adding abstract or external but the error is still there..

Answer 1

This is due to the following line :

public Cat(string name, string type, bool water, bool yalel);

This is a constructor declaration, so you have to declare a body for this method :

public Cat(string name, string type, bool water, bool yalel)
{
   // Do something like :
   // this.name = name;
   // this.type = type;
   // etc...
}

Answer 2

try this

 public Cat(string name, string type, bool water, bool yalel)
  {

  }