个回答

• qq_慕侠5280997

  2020-05-15 17:55:26

  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 + "的叫声是:" + "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("宠物的名字是：" + _name);
              Console.WriteLine("宠物的年龄是" + _age);
              Console.WriteLine("宠物最喜欢的食物是" + _food);
          }
          override public void PrintVoice()
          {
              Console.WriteLine(_name + "的叫声是:" + "喵喵喵");
          }
      }
      class Program
      {
          static void Main(string[] args)
          {
              Pet[] pets = new Pet[] { new Dog("旺财", 7, "肉骨头"), new Cat("阿福", 3, "小鱼干") };

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

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

          }
      }
  }

  /*楼上说的没错，Name这个错误比明显，另外是基类里定义的食物哪里：

  Console.WriteLine("Pet's favorit food is" + _age);         _age换成__food,不过这表面上的东西检查完了，还有关键的是，获取数组长度哪里语法有误，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();            }

  
  

  
  

  0

• qq_慕慕8513755

  2019-08-02 11:08:01

  
  

  

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

  Name 改成_name,

  你原来设的是_name，没有Name

  
  

  0