[C#]引數的傳遞方式

問題：
引數的傳遞方式？
參考：稍微靠靠腰

Code：

using System;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ConsoleApplication2
{
    class Program
    {
        static void Main(string[] args)
        {
            Console.WriteLine("\n *** 一般函式傳遞 *** \n");
            int a = 10, b = 20;
            
            Console.WriteLine("\n 未進入函式前\t\t:a={0} \t b={1}", a, b);
           
            CallValues(a, b);
            Console.WriteLine("\n 進入函式後\t\t:a={0} \t b={1}", a, b);

            CallValuesUseRef(ref a, ref b);
            Console.WriteLine("\n 進入函式後\t\t:a={0} \t b={1}", a, b);

            int initX, initY;
            Console.WriteLine("\n 進入函式前\t\t:initX,initY 沒有初始值");
            CallValuesUseOut(out initX, out initY);
            Console.WriteLine("\n 進入函式後\t\t:initX={0} \t initY={1}", initX, initY);

            Console.Read();
        }

        private static void CallValuesUseOut(out int x, out int y)
        {
            int z;
            x = 20;
            y = 30;
            Console.WriteLine("\n 函式內 交換前\t\t:x={0} \t y={1}", x, y);

            z = x;
            x = y;
            y = z;

            Console.WriteLine("\n 函式內 交換後\t\t:x={0} \t y={1}", x, y);

        }

        private static void CallValuesUseRef(ref int x, ref int y)
        {
            int z;
            x = 20;
            y = 30;
            Console.WriteLine("\n 函式內 交換前\t\t:x={0} \t y={1}", x, y);

            z = x;
            x = y;
            y = z;

            Console.WriteLine("\n 函式內 交換後\t\t:x={0} \t y={1}", x, y);
        }

        private static void CallValues(int x, int y)
        {
            int z;
            x = 20;
            y = 30;
            Console.WriteLine("\n函式內 交換前\t\t:x={0} \t y={1}", x, y);

            z = x;
            x = y;
            y = z;

            Console.WriteLine("\n函式內 交換後\t\t:x={0} \t y={1}", x, y);
        }
    }
}

結果：