ax²+bx+c=0(a≠0)

using System;using System.Collections.Generic;using System.Linq;using System.Text;namespace ConsoleApplication6{    class Program    {        static void Main(string[] args)        {             //软件一班            //李旭            double a, b, c;            Console.WriteLine("请输入a,b,c:");            a = Convert.ToDouble(Console.ReadLine());            b = Convert.ToDouble(Console.ReadLine());            c = Convert.ToDouble(Console.ReadLine());            if (Math.Pow(b, 2) - 4 * a * c >= 0)            {                Console.WriteLine("x1=" + (-b + Math.Sqrt(b * b - 4 * a * c)) / (2 * a));                Console.WriteLine("x1=" + (-b - Math.Sqrt(b * b - 4 * a * c)) / (2 * a));            }            else            {                Console.WriteLine("无解！");                Console.Read();            }        }    }}

觉得做编程和有意思  不过自己训练的少   要多多练习