c#制作计算器实现加、减、乘、除、指数、对数、平方、开根号、正弦、余弦、绝对值代码

以下是C#制作计算器实现加、减、乘、除、指数、对数、平方、开根号、正弦、余弦、绝对值的代码：

using System;

namespace Calculator
{
    class Program
    {
        static void Main(string[] args)
        {
            Console.WriteLine("请输入第一个数字：");
            double num1 = Convert.ToDouble(Console.ReadLine());

            Console.WriteLine("请输入运算符：");
            string op = Console.ReadLine();

            Console.WriteLine("请输入第二个数字：");
            double num2 = Convert.ToDouble(Console.ReadLine());

            switch (op)
            {
                case "+":
                    Console.WriteLine("结果为：" + (num1 + num2));
                    break;
                case "-":
                    Console.WriteLine("结果为：" + (num1 - num2));
                    break;
                case "*":
                    Console.WriteLine("结果为：" + (num1 * num2));
                    break;
                case "/":
                    Console.WriteLine("结果为：" + (num1 / num2));
                    break;
                case "^":
                    Console.WriteLine("结果为：" + Math.Pow(num1, num2));
                    break;
                case "log":
                    Console.WriteLine("结果为：" + Math.Log(num1, num2));
                    break;
                case "sqrt":
                    Console.WriteLine("结果为：" + Math.Sqrt(num1));
                    break;
                case "sin":
                    Console.WriteLine("结果为：" + Math.Sin(num1));
                    break;
                case "cos":
                    Console.WriteLine("结果为：" + Math.Cos(num1));
                    break;
                case "abs":
                    Console.WriteLine("结果为：" + Math.Abs(num1));
                    break;
                default:
                    Console.WriteLine("无效的运算符！");
                    break;
            }

            Console.ReadLine();
        }
    }
}