VS-C#

发布者: 新的开始 | 发布时间: 2015-11-29 16:17| 查看数: 11133| 评论数: 80|帖子模式

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

namespace 练习5._6
{
class Program
{
      static void Main(string[] args)
      {
         //Console.WriteLine("请输入梯形的长");
         //string str = Console.ReadLine();
         //double num1 =Convert.ToDouble(str ) ;
         //Console.WriteLine("请输入梯形的宽");
         //string str1 = Console.ReadLine();
         //double num2 = Convert.ToInt32(str1);
         //Console.WriteLine("请输入梯形的高");
         //string str3 = Console.ReadLine();
         //double num3 = Convert.ToDouble(str3);
         //Console.WriteLine("请算出梯形的面积");
         //double res = (num1 + num2) * num3 / 2;
         //Console.WriteLine(res);
         Console.WriteLine("请输入圆的半径");
         string str = Console.ReadLine();
         double n = Convert.ToDouble(str);
         //Console.WriteLine("请输入圆的周长");
         Console.WriteLine("圆的周长:"+(2*n*3.14));
         Console.WriteLine("圆的面积:"+(n*n*3.14));

         Console.ReadKey();