求三角形

//软件技术二班
//作者;B28
//日期;2014年11月16日
//问题描述;求三角形
//输入描述任；意输入三角形的三条边长
//程序输出；根据程序输出三角形类型

namespace ConsoleApplication17
{
    class Program
    {
        static void Main(string[] args)
        {
            double a = 0, b = 0, c = 0;
            string result = "";

            Console.WriteLine("请输入三条边的边长,以回车为间隔");
            a = double.Parse(Console.ReadLine());
            b = double.Parse(Console.ReadLine());
            c = double.Parse(Console.ReadLine());
            if (a + b > c && a + c > b && b + c > a)
            {
                if (a == b && b == c) result = "等边";
                else if (a == b || a == c || b == c)
                {
                    result = "等腰";
                    if (a * a + b * b == c * c || a * a + c * c == b * b || b * b + c * c == a * a) result = "直角";

                }
                else if (a * a + b * b == c * c || a * a + c * c == b * b || b * b + c * c == a * a) result = "直角";
                else result = "任意";
            }
            else result = "非";

            Console.Clear();
            Console.WriteLine("边长为{0},{1},{2}的三条边构成\n{3}三角形", a, b, c, result);
            Console.ReadLine();

        }
    }
}