type.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace kisoren
{
    class Program
    {
        static void Main(string[] args)
        {
            //参照型
            MyClass a = new MyClass { X = 100, Y = 200 };
            //値型
            MyStruct b = new MyStruct { X = 200, Y = 100 };

            Console.WriteLine("Init");
            Console.WriteLine(" MyClass:mc X={0} Y={1}", a.X, a.Y);
            Console.WriteLine(" MyStruct:ms X={0} Y={1}", b.X, b.Y);

            Print(a, b);

            Console.WriteLine("Main");
            Console.WriteLine(" MyClass:mc X={0} Y={1}",a.X, a.Y);
            Console.WriteLine(" MyStruct:ms X={0} Y={1}", b.X, b.Y);
        }

        public static void Print(MyClass mc, MyStruct ms)
        {
            Console.WriteLine("Print");
            mc.X = mc.X * 2;    //適当に値を変える
            mc.Y = mc.Y / 2;
            Console.WriteLine(" MyClass:mc X={0} Y={1}", mc.X, mc.Y);
            ms.X = ms.X * 5;    //適当に値を変える
            ms.X = ms.Y / 5;
            Console.WriteLine(" MyStruct:ms X={0} Y={1}", ms.X, ms.Y);
        }
    }
    class MyClass
    {
        public int X { get; set; }
        public int Y { get; set; }
    }
    struct MyStruct
    {
        public int X { get; set; }
        public int Y { get; set; }
    }

}