클래스의 상속과 초기화 예제 + virtual까지의 예제

상속과 초기화

using System;
using System.Collections;
using System.Collections.Generic;
using System.Collections.Specialized;
using System.Diagnostics;
using System.IO;
using System.Linq;
using System.Runtime.InteropServices;
using System.Text;
using System.Threading.Tasks;
using System.Runtime.Serialization.Formatters.Binary;
using System.Threading;
using System.Diagnostics.CodeAnalysis;

namespace ConsoleApp1
{  
    class Car
    {
        public string color;
        public float speed;
        public Car()
        { }
        public Car (string color_in ="red", float speed_in = 0.0f)
        {
            color = color_in;
            speed = speed_in;
        }
        public void print()
        {
            Console.WriteLine("컬러 :{0}, 스피드 : {1}", color, speed);
        }
    }
    class SportsCar : Car
    {
        public string tubo;
        public SportsCar(string color_in = "red", float speed_in = 0.0f, string tubo_in ="good") : base(color_in, speed_in)
        {
            this.tubo = tubo_in;
        }
        public void print()
        {
            Console.WriteLine("컬러 :{0}, 스피드 : {1}, tubo : {2}", color, speed, tubo);
        }
    }
    class Program
    {
        static void Main(string[] args)
        {
            SportsCar sportsCar = new SportsCar();
            sportsCar.print();
        }
    }
}

 

virtual까지를 이용한 간단예제

using System;
using System.Collections;
using System.Collections.Generic;
using System.Collections.Specialized;
using System.Diagnostics;
using System.IO;
using System.Linq;
using System.Runtime.InteropServices;
using System.Text;
using System.Threading.Tasks;
using System.Runtime.Serialization.Formatters.Binary;
using System.Threading;
using System.Diagnostics.CodeAnalysis;

namespace ConsoleApp1
{  
    class Car
    {
        public string color;
        public float speed;
        public Car(string color_in = "red", float speed_in = 0.0f)
        {
            color = color_in;
            speed = speed_in;
        }
        public virtual void booster(float addSpeed)
        {
            speed += addSpeed;
        }
        public virtual void SetColor(string color_in)
        {
            color = color_in;
        }
        public virtual void SetSpeed(float speed_in)
        {
            speed = speed_in;
        }
        public virtual void print()
        {
            Console.WriteLine("일반소형차ㅠㅠ");
            Console.WriteLine("컬러 :{0},\n스피드 : {1}\n", color, speed);
        }
    }
    class SportsCar : Car
    {
        public string tubo;
        public SportsCar(string color_in = "red", float speed_in = 0.0f, string tubo_in ="good") : base(color_in, speed_in)
        {
            this.tubo = tubo_in;
        }
        public override void print()
        {
            Console.WriteLine("스포츠카!!");
            Console.WriteLine("컬러 : {0},\n스피드 : {1},\ntubo : {2}\n", color, speed, tubo);
        }
    }
    class Program
    {
        //다형성을 이용한 함수
        static void print(Car car)
        {
            car.print();
        }
        static void Main(string[] args)
        {
            SportsCar sportsCar = new SportsCar();
            sportsCar.SetSpeed(speed_in: 15.0f);
            sportsCar.SetColor(color_in: "yellow");
            sportsCar.booster(addSpeed: 2.0f);
            sportsCar.print();

            Car normalCar = new Car();
            normalCar.SetSpeed(speed_in: 5.0f);
            normalCar.SetColor(color_in: "blue");
            normalCar.print();

            //다형성 이용
            List<Car> cars = new List<Car>();
            cars.Add(sportsCar);
            cars.Add(normalCar);

            Console.WriteLine("리스트에 넣었던 값들을 출력!");
            foreach (var car in cars)
                car.print();

            Console.WriteLine("print함수를 이용한 출력");
            foreach (var car in cars)
                print(car);
        }
    }
}