using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace ConsoleApplication1
{
class Program
{
static void Main(string[] args)
{
int i1 = 10;
int i2 = 20;
Console.WriteLine(i1 + "+" + i2 + "=" + (i1 + i2)); // 10+20=30
Console.ReadKey();// 按一个键继续执行
}
}
}