48 lines
1.5 KiB
C#
48 lines
1.5 KiB
C#
using System;
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using static System.Math;
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namespace C_Sharp_1_3
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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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Console.WriteLine("请输入变量x的值：");
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double x = double.Parse(Console.ReadLine());
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double y;
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// 单句单分支方法
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y = Log(-5 * x) + 6 * Sqrt(Abs(x) + Exp(4)) - Pow((x + 1), 3);
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if (x>=0)
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{
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y = (Pow(x, 2) - 3 * x) / (Pow(x, 2) + 1) + 2 * PI + Sin(x);
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}
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Console.WriteLine("方法一，x={0},y={1}",x,y);
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// 两句单分支方法
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if (x >= 0)
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{
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y = (Pow(x, 2) - 3 * x) / (Pow(x, 2) + 1) + 2 * PI + Sin(x);
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}
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if(x < 0)
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{
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y = Log(-5 * x) + 6 * Sqrt(Abs(x) + Exp(4)) - Pow((x + 1), 3);
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}
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Console.WriteLine("方法二，x={0},y={1}", x,y);
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// 双分支方法
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if (x >= 0)
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{
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y = (Pow(x, 2) - 3 * x) / (Pow(x, 2) + 1) + 2 * PI + Sin(x);
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}
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else
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{
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y = Log(-5 * x) + 6 * Sqrt(Abs(x) + Exp(4)) - Pow((x + 1), 3);
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}
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Console.WriteLine("方法三，x={0},y={1}",x,y);
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// 条件运算符方法
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y = (x >= 0) ? (Pow(x, 2) - 3 * x) / (Pow(x, 2) + 1) + 2 * PI + Sin(x) : Log(-5 * x) + 6 * Sqrt(Abs(x) + Exp(4)) - Pow((x + 1), 3);
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Console.WriteLine("方法四，x={0},y={1}",x,y);
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}
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}
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}
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