using System;
using System.Collections.Generic;
using System.Linq;
using System.Text; namespace The parameters of the function
{ class Program
static void mm(ref int x, ref int y)
Console.WriteLine(" Passing in functions mm The parameters for :x = {0},y = {1}", x, y);
// The following three sentences are : Exchange the values of two parameters
int temp = x;
x = y;
y = temp;
Console.WriteLine(" Executing functions mm After the output of the parameter value is :x = {0},y = {1}", x, y);
static void Main(string[] args)
int i = , j = ;
Console.WriteLine(" stay Main Call in method mm The function passes in two arguments :i = {0},j = {1}", i, j);
mm(ref i, ref j);
Console.WriteLine(" stay Main After the execution of mm After the function :i = {0},j = {1}", i, j);

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