输入矩形的长和宽。计算其面积和周长

输入矩形的长和宽。计算其面积和周长

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace 作业2_1
{
    class Program
    {
        static void Main(string[] args)
        {
            Console.WriteLine("长：\r\n");
            double lon =double.Parse( Console.ReadLine());
            Console.WriteLine("宽：\r\n");
            double wide = double.Parse(Console.ReadLine());
            Console.WriteLine("\r\n面积：{0}   周长：{1}\r\n",lon*wide,2*(lon+wide));
            Console.ReadLine();

        }
    }
}