1分钟用C#编写计算器

            int first;
            int secondly;
            string myoperator;
            int result;

            Console.WriteLine("计算器");
            Console.WriteLine("请输入第一个数");
            first = int.Parse(Console.ReadLine());
            Console.WriteLine("请输入第二个数");
            secondly = int.Parse(Console.ReadLine());
            Console.WriteLine("请输入运算符（+ - * / %）");

            myoperator = Console.ReadLine();
            if (myoperator =="+" )
            {
                result = first + secondly;
                Console.WriteLine("" + first + "加上" + secondly + "等于" + result + "");
            }
            else if (myoperator == "-")
            {
                result = first - secondly;
                Console.WriteLine("" + first + "减去" + secondly + "等于" + result + "");
            }
            else if (myoperator == "*")
            {
                result = first * secondly;
                Console.WriteLine("" + first + "乘以" + secondly + "等于" + result + "");
            }
            else if (myoperator == "/")
            {
                result = first / secondly;
          

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