//使用方法參數ref，採傳址呼叫
static void ShowMsg(ref ModifyScore one)
{
//重新建立一個物件，指定名字和分數
one = new ModifyScore();
one.Name = "Peter";
one.Mark = 73;
}
//主程式
static void Main(string[] args)
{
ModifyScore jan = new ModifyScore(); //建立物件
jan.Name = "Janet";
jan.Mark = 95;
ShowMsg(ref jan); //以物件做傳遞對象
Console.WriteLine($"{jan.Name}, 分數 {jan.Mark}");
Console.ReadKey(); //螢幕暫停
}