45 lines
1.4 KiB
C#
45 lines
1.4 KiB
C#
using System;
|
||
using static System.Math;
|
||
|
||
namespace C_Sharp_1_5
|
||
{
|
||
public class Program
|
||
{
|
||
static void Main()
|
||
{
|
||
double a, b, c, delta, real, imag;
|
||
Console.Write("请输入系数a");
|
||
a = double.Parse(Console.ReadLine());
|
||
Console.Write("请输入系数b");
|
||
b = double.Parse(Console.ReadLine());
|
||
Console.Write("请输入系数c");
|
||
c = double.Parse(Console.ReadLine());
|
||
if (a == 0 && b == 0)
|
||
{
|
||
Console.WriteLine("该方程无解");
|
||
}
|
||
else
|
||
{
|
||
delta = b * b - 4 * a * c;
|
||
if (delta > 0)
|
||
{
|
||
double x1 = (-b + Sqrt(delta)) / (2 * a);
|
||
double x2 = (-b - Sqrt(delta)) / (2 * a);
|
||
Console.WriteLine("该方程有两个不等实根，分别为：x1={0},x2={1}", x1, x2);
|
||
}
|
||
else if (delta == 0)
|
||
{
|
||
double x = -b / (2 * a);
|
||
Console.WriteLine("该方程有两个相等实根，均为：x={0}", x);
|
||
}
|
||
else
|
||
{
|
||
real = -b / (2 * a);
|
||
imag = Sqrt(-delta) / (2 * a);
|
||
Console.WriteLine("该方程有两个共轭复根，分别为：x1={0}+{1}i,x2={0}-{1}i", real, imag);
|
||
}
|
||
}
|
||
}
|
||
}
|
||
}
|