第1个回答 2012-03-15
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace ConsoleApplication1
{
class Program
{
static void Main(string[] args)
{
double r=0;
double circle;
Console.WriteLine("请输入周长");
r = double.Parse(Console.ReadLine());
const double PI = 3.14159;
double area;
circle = 2 * PI * r;
area = PI * r * r;
Console.WriteLine("周长"+"="+circle);
Console.WriteLine("面积" + "=" + area);
}
}
}
这个应该可以吧~