Synchronization of old projects

Part1
2025-09-30 16:46:01 +08:00
parent 116b65164b
commit 4e1548abe2
167 changed files with 8668 additions and 43 deletions
@@ -0,0 +1,48 @@
+namespace Lesson8_封装_静态类和静态构造函数练习
+{
+    static class Calc
+    {
+        private static float PI = 3.1415926f;
+        public static float CalcCirclePerimeter(int r)
+        {
+            return PI * r * 2;
+        }
+        public static float CalcCircleArea(int r)
+        {
+            return PI * r * r;
+        }
+        public static int CalcRectanglePerimeter(int h,int w)
+        {
+            return (h + w) * 2;
+        }
+        public static int CalcRectangleArea(int h, int w)
+        {
+            return h * w;
+        }
+        public static int Absolute(int num)
+        {
+            if (num < 0)
+            {
+                return -num;
+            }
+            else
+            {
+                return num;
+            }
+        }
+
+    }
+    internal class Program
+    {
+        static void Main(string[] args)
+        {
+            Console.WriteLine("Hello, World!");
+            Console.WriteLine(Calc.CalcRectanglePerimeter(5,10));
+            Console.WriteLine(Calc.CalcRectangleArea(5, 10));
+            Console.WriteLine(Calc.CalcCirclePerimeter(3));
+            Console.WriteLine(Calc.CalcCircleArea(3));
+            Console.WriteLine(Calc.Absolute(123));
+            Console.WriteLine(Calc.Absolute(-321));
+        }
+    }
+}