题目

定义两个变量如：number1,number2分别赋值为10和5，写程序交换两个变量的值。注：不能使用中间变量。

代码

int number1, number2;
            number1 = 10;
            number2 = 5;
            Console.WriteLine("交换前：number1={0},number2={1}", number1, number2);
            number1 = number1 + number2;
            number2 = number1 - number2;
            number1 = number1 - number2;
            Console.WriteLine("交换后：number1={0},number2={1}", number1, number2);
            Console.ReadKey();

效果图

拖了这么久还是好啦