20251101

2025-11-01 08:20:49 +08:00
parent e0fbc20716
commit 6151e4f8c9
29 changed files with 1010 additions and 3 deletions
@@ -0,0 +1,34 @@
+using System;
+namespace _5_1
+{
+    class MyMath
+    {
+        public const double PI = 3.1415926;
+        public static double perimeter(double r)
+        {
+            double p = 2 * PI * r;
+            return p;
+        }
+        public static double area(double r)
+        {
+            double a = PI * r * r;
+            return a;
+        }
+        public static double volume(double r)
+        {
+            double v = (4.0 / 3) * PI * r * r * r;
+            return v;
+        }
+        public class Program
+        {
+            static void Main(string[] args)
+            {
+                Console.WriteLine("请输入半径：\n");
+                double r = Convert.ToDouble(Console.ReadLine());
+                Console.WriteLine("圆的周长为：{0}\n", MyMath.perimeter(r));
+                Console.WriteLine("圆的面积为：{0}\n", MyMath.area(r));
+                Console.WriteLine("球的体积为：{0}\n", MyMath.volume(r));
+            }
+        }
+    }
+}