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

namespace ConsoleApp8
{
??? public class Pet
??? {
??????? public Pet(string name, uint age, string food)
??????? {
??????????? _name = name;
??????????? _age = age;
??????????? _food = food;
??????? }
??????? protected string _name;
??????? protected uint _age;
??????? protected string _food;
??????? protected string Voice;
??????? virtual public void PrintName()
??????? {
??????????? Console.WriteLine("Pet's name is" + _name);
??????????? Console.WriteLine("Pet's age is" + _age);
??????????? Console.WriteLine("Pet's favorit food is" + _food);
??????? }

??????? virtual public void PrintVoice()
??????? {
??????????? Console.WriteLine("Pet's voice is spking");
??????? }
??? }

??? public class Dog : Pet
??? {
??????? public Dog(string name, uint age, string food) : base(name, age, food)
??????? {
??????? }

??????? override public void PrintVoice()
??????? {
??????????? Console.WriteLine(_name + "的叫聲是:" + "汪汪汪");
??????? }
??? }
??? public class Cat : Pet
??? {
??????? public Cat(string name, uint age, string food) : base(name, age, food)
??????? {
??????? }
??????? override public void PrintName()
??????? {
??????????? Console.WriteLine("寵物的名字是：" + _name);
??????????? Console.WriteLine("寵物的年齡是" + _age);
??????????? Console.WriteLine("寵物最喜歡的食物是" + _food);
??????? }
??????? override public void PrintVoice()
??????? {
??????????? Console.WriteLine(_name + "的叫聲是:" + "喵喵喵");
??????? }
??? }
??? class Program
??? {
??????? static void Main(string[] args)
??????? {
??????????? Pet[] pets = new Pet[] { new Dog("旺財(cái)", 7, "肉骨頭"), new Cat("阿福", 3, "小魚干") };

??????????? for (int i = 0; i < pets.GetLength(0); i++)
??????????? {
??????????????? pets[i].PrintName();

??????????? }
??????????? for (int y = 0; y < pets.GetLength(0); y++)
??????????? {
??????????????? pets[y].PrintVoice();
??????????? }

??????? }
??? }
}

/*樓上說(shuō)的沒(méi)錯(cuò)，Name這個(gè)錯(cuò)誤比明顯，另外是基類里定義的食物哪里：

Console.WriteLine("Pet's favorit food is" + _age); ? ? ? ? _age換成__food,不過(guò)這表面上的東西檢查完了，還有關(guān)鍵的是，獲取數(shù)組長(zhǎng)度哪里語(yǔ)法有誤，改正完就ok了，更正如下：

?for(int i=0; i<pets.GetLength(0); i++)

? ? ? ? ? ? { ? ? ? ? ? ? ?? pets[i].PrintName(); ? ? ? ? ?? }

?for (int y = 0; y < pets.GetLength(0); y++)

? ? ? ? ? ? { ? ? ? ? ? ? ? pets[y].PrintVoice(); ? ? ? ? ?? }

最下面的Console.WritLine(Name+"..............");

Name 改成_name,

你原來(lái)設(shè)的是_name，沒(méi)有Name