在C#中使用继承

public class ParentClass
{
    public string Name { get; set; }

    public void PrintName()
    {
        Console.WriteLine($"My name is {Name}");
    }
}

public class ChildClass : ParentClass
{
    public ChildClass() : base()
    {
    }

    public string Age { get; set; }

    public void PrintAge()
    {
        Console.WriteLine($"My age is {Age}");
    }
}

ChildClass child = new ChildClass();
child.Name = "John";
child.Age = "18";
child.PrintName();
child.PrintAge();

My name is John
My age is 18