using System;
namespace P4_6
{
    class Program
    {
        static void Main(string[] args)
        {
            int mainX = 168;
            int mainY = 861;
            Console.WriteLine("ú֮ǰֵǣmainX= {0}  mainY={1} ", mainX, mainY);
            swap(mainX,mainY );         
            Console.WriteLine("úֵ֮ǣmainX= {0}  mainY={1} ", mainX, mainY);
            Console.ReadLine();

        }
        static void swap( int x,  int y) 
        { 
            int temp = x; 
            x = y;
            y = temp;
            Console.WriteLine("ڱֵǣx={0}   y={1}",x,y);
        }
    }
}
