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