实现以下目标
![](https://img.haomeiwen.com/i14495073/3c35fcd62da520c8.png)
static void Main(string[] args)
{
int num1 = 5;
int num2 = 10;
Console.WriteLine("num1="+num1);
Console.WriteLine("num1="+num2);
num1 = num1 + num2;
num2 = num1 - num2;
num1 = num1 - num2;
Console.WriteLine("num1="+num1);
Console.WriteLine("num2="+num2);
Console.ReadKey();
}