值参数.cs

深入浅出C＃,学习C#比较好的用例,能够很快掌握C#.

using System;

class Myclass
{
	public static int a,b,c;
	public Myclass()
	{
		a=1;
		b=2;
		c=3;
	}

	public void F(int a1,int b1,int c1)//值参数
	{
		Console.WriteLine("in F().");
		int temp=a1;
		a1=b1;
		b1=c1;
		c1=temp;//交换a、b和c的值
		Console.WriteLine("a1={0},b1={1},c1={2}",a1,b1,c1);
	}

	public static void Main()
	{
		Console.WriteLine("in Main().");
		Myclass myclass=new Myclass();
		Console.WriteLine("a={0},b={1},c={2}",Myclass.a,Myclass.b,Myclass.c);
		Console.WriteLine("changing the value of a、b and c......");
		myclass.F(a,b,c);//传递值参数
		Console.WriteLine("after changing.");
		Console.WriteLine("a={0},b={1},c={2}",Myclass.a,Myclass.b,Myclass.c);
		//主函数中a、b和c的值并没有变化
	}
}