맨날 헷갈리는 상속 오버라이딩 정리

생성자

public class Mom
{
    public Mom()
    {
        Console.Write("mom ");
    }
}

public class Son : Mom
{
    public Son()
    {
        Console.Write("son ");
    }
}

public static void Main()
{
    new Son(); // mom son
    new Mom(); // mom
}

 

mom son
mom

 

 

 

상속

public class Mom
{
    public void Print()
    {
        Console.Write("mom ");
    }
}

public class Son : Mom
{
    public void Print()
    {
        Console.Write("son ");
    }
}

public static void Main()
{
    var son = new Son();
    son.Print(); // son

    Mom mom = new Son();
    mom.Print(); // mom
}

 

son
mom

 

 

 

오버라이딩

public abstract class Mom
{
    public abstract void Print();
}

public class Son : Mom
{
    public override void Print()
    {
        Console.Write("son ");
    }
}

public static void Main()
{
    var son = new Son();
    son.Print(); // son

    Mom mom = new Son();
    mom.Print(); // son
}

 

son
son

 

 

 

가상함수 (2024/3/28 추가)

public class Mom
{
	public virtual void Print()
	{
		Console.WriteLine("mom");
	}
}

public class Son : Mom
{
	public void Print()
	{
		Console.WriteLine("son");
	}
}

public class Daughter : Mom
{
}


public static void Main()
{
    var son = new Son();
    var mom = new Mom(); 
    var daughter = new Daughter(); 

    son.Print(); // son
    mom.Print(); // mom
    daughter.Print(); // mom
}

 

 

 

가상함수 + (2024/3/28 추가)

public class Mom
{
	public virtual void Print()
	{
		Console.WriteLine("mom");
	}
}

public class Son : Mom
{
	public void Print()
	{
		Console.WriteLine("son");
	}
	
	public void MomPrint()
	{
		base.Print();
	}
}


public static void Main()
{
    var son = new Son();
    son.MomPrint(); // mom
    
    Mom mom = new Son();
	mom.Print(); // mom
}