C#宠物领养系统，代码

以下是一个基于 C# 的宠物领养系统的示例代码：

using System;
using System.Collections.Generic;

namespace PetAdoptionSystem
{
    class Program
    {
        static void Main(string[] args)
        {
            List<Pet> availablePets = new List<Pet>();
            List<Pet> adoptedPets = new List<Pet>();

            // 添加可领养的宠物
            availablePets.Add(new Pet("Dog", "Buddy", 2, "Male", "Golden Retriever"));
            availablePets.Add(new Pet("Cat", "Fluffy", 1, "Female", "Persian"));
            availablePets.Add(new Pet("Bird", "Tweety", 3, "Male", "Parakeet"));

            Console.WriteLine("Welcome to the Pet Adoption System!");
            Console.WriteLine();

            while (true)
            {
                Console.WriteLine("Please select an option:");
                Console.WriteLine("1. View available pets");
                Console.WriteLine("2. View adopted pets");
                Console.WriteLine("3. Adopt a pet");
                Console.WriteLine("4. Exit");

                string choice = Console.ReadLine();

                switch (choice)
                {
                    case "1":
                        Console.WriteLine();
                        Console.WriteLine("Available pets:");
                        foreach (Pet pet in availablePets)
                        {
                            Console.WriteLine(pet);
                        }
                        Console.WriteLine();
                        break;

                    case "2":
                        Console.WriteLine();
                        Console.WriteLine("Adopted pets:");
                        foreach (Pet pet in adoptedPets)
                        {
                            Console.WriteLine(pet);
                        }
                        Console.WriteLine();
                        break;

                    case "3":
                        Console.WriteLine();
                        Console.WriteLine("Available pets:");
                        foreach (Pet pet in availablePets)
                        {
                            Console.WriteLine(pet);
                        }
                        Console.WriteLine();

                        Console.Write("Enter the name of the pet you want to adopt: ");
                        string petName = Console.ReadLine();

                        Pet selectedPet = null;

                        foreach (Pet pet in availablePets)
                        {
                            if (pet.Name == petName)
                            {
                                selectedPet = pet;
                                break;
                            }
                        }

                        if (selectedPet != null)
                        {
                            adoptedPets.Add(selectedPet);
                            availablePets.Remove(selectedPet);
                            Console.WriteLine("Congratulations! You have adopted " + selectedPet.Name + ".");
                        }
                        else
                        {
                            Console.WriteLine("Sorry, there is no pet with that name available for adoption.");
                        }

                        Console.WriteLine();
                        break;

                    case "4":
                        Console.WriteLine();
                        Console.WriteLine("Thank you for using the Pet Adoption System. Goodbye!");
                        return;

                    default:
                        Console.WriteLine();
                        Console.WriteLine("Invalid choice. Please try again.");
                        Console.WriteLine();
                        break;
                }
            }
        }
    }

    class Pet
    {
        public string Species { get; set; }
        public string Name { get; set; }
        public int Age { get; set; }
        public string Gender { get; set; }
        public string Breed { get; set; }

        public Pet(string species, string name, int age, string gender, string breed)
        {
            Species = species;
            Name = name;
            Age = age;
            Gender = gender;
            Breed = breed;
        }

        public override string ToString()
        {
            return $"{Name} ({Species}, {Age} years old, {Gender}, {Breed})";
        }
    }
}

该系统使用一个 `Pet` 类来表示宠物，包括物种、名字、年龄、性别和品种属性。在主程序中，有一个可领养宠物列表和一个已领养宠物列表。用户可以通过菜单选项来查看可领养和已领养的宠物，领养宠物或退出系统。领养宠物时，用户需要输入宠物的名字，系统会检查该名字是否在可领养宠物列表中，如果是，则将该宠物从可领养宠物列表中移除并添加到已领养宠物列表中。

请注意，以上代码仅为示例，实际的宠物领养系统可能需要更多的功能和验证。