计算加，减，乘，除 - 编程论坛

#2

Spy0012015-10-27 22:49

static void Main(string[] args)
{
    Console.Write("a=");
    string a = Console.ReadLine();
    Console.Write("b=");
    string b = Console.ReadLine();
    double x = Convert.ToDouble(a);
    double y = Convert.ToDouble(b);
    Console.WriteLine("a+b=" + (x + y));
    Console.WriteLine("a-b="+ (x-y));
    Console.WriteLine("a*b=" + (x * y));
    Console.WriteLine("a/b=" + x / y);
    Console.ReadKey();
}

#3

over12302015-10-28 08:42

int a, b;
            do
            {
                Console.Write("请输入第一个整数a：");
            } while (!int.TryParse(Console.ReadLine(), out a));
            do
            {
                Console.Write("请输入第二个整数b：");
            } while (!int.TryParse(Console.ReadLine(), out b));
            Console.WriteLine("a+b=" + (a + b).ToString());
            Console.WriteLine("a-b=" + (a - b).ToString());
            Console.WriteLine("a*b=" + (a * b).ToString());
            if (b == 0)
            { Console.WriteLine("因除数b为0，无法进行除法运算！"); }
            else

            { Console.WriteLine("a/b=" + float.Parse(a.ToString()) /float.Parse ( b.ToString())); }

            Console.ReadLine();

#4

冷锋20482015-11-10 17:48

回复 3楼 over1230

谢谢

#5

longhair2015-12-14 18:02

刚接触，学习学习！

#6

ivanchan2015-12-25 11:53

用多态会比较好