Create Virtual Class

Program.cs

@@ -4,9 +4,37 @@ namespace ooad_csharp_oop
 {
     class Program
     {
-        static void Main(string[] args)
-        {
-            Console.WriteLine("Hello World!");
+        public static void Main(string[] args) {
+            // ឧទាហរណ៍ទី១
+            double distance, hour, fuel = 0.0;
+            Console.Write("Enter the Distance: ");
+            distance = Double.Parse(Console.ReadLine());
+            Console.Write("Enter the Hours: ");
+            hour = Double.Parse(Console.ReadLine());
+            Console.Write("Enter the Fuel: ");
+            fuel = Double.Parse(Console.ReadLine());
+
+            Car objCar = new Car(distance, hour, fuel);
+            Vehicle objVeh = objCar;
+            objCar.Average();
+            objVeh.Average();
+            objCar.Speed();
+            objVeh.Speed();
+            Console.ReadKey(); 
+
+            // ឧទាហរណ៍ទី២
+            double length, width, radius = 0.0;
+            Console.Write("Enter the Length: ");
+            length = Double.Parse(Console.ReadLine());
+            Console.Write("Enter the Width: ");
+            width = Double.Parse(Console.ReadLine());
+            Rectangle objRectangle = new Rectangle(length, width);
+            objRectangle.Area();
+            Console.Write("Enter the Radius: ");
+            radius = Double.Parse(Console.ReadLine());
+            Circle objCircle = new Circle(radius);
+            objCircle.Area();
+            Console.ReadKey(); 
         }
     }
 }

README.md

@@ -0,0 +1,9 @@
+"# ooad-csharp-oop" 
+
+**OOP Part2** Virtual Class in C#
+
+<br>
+
+    What is a Virtual Method in C#?
+    In object-oriented programming, a virtual method can be changed by an overriding member in a derived class by a method with the same signature. In order to create virtual method, precede the method's declaration in the base class with the "virtual" modifier.
+<br>

Shape.cs

@@ -0,0 +1,43 @@
+using System;
+
+namespace ooad_csharp_oop
+{
+    // ឧទាហរណ៍ទី២
+    public class Shape
+    {
+        protected double length = 0.0;
+        protected double radius = 0.0;
+        protected double width = 0.0;
+
+        public Shape(double length, double width) {
+            this.length = length;
+            this.width = width;
+        }
+
+        public Shape(double radius) {
+            this.radius = radius;
+        }
+
+        public virtual void Area() {
+            double area = 0.0;
+            area = Math.PI * Math.Pow(radius, 2);
+            Console.WriteLine("Area of Shape is :{0:0.00} ", area);
+        }
+    }
+
+    public class Rectangle : Shape {
+        public Rectangle(double length, double width)
+            : base(length, width) {
+        }
+        public override void Area() {
+            double area = 0.0;
+            area = length * width;
+            Console.WriteLine("Area of Rectangle is : {0:0.00} ", area);
+        }
+    }
+    public class Circle : Shape {
+        public Circle(double radius)
+            : base(radius) {
+        }
+    }
+}

Vehicle.cs

@@ -0,0 +1,46 @@
+namespace ooad_csharp_oop
+{
+    // ឧទាហរណ៍ទី១
+    public class Vehicle
+    {
+        protected double distance = 0.0;
+        protected double hour = 0.0;
+        protected double fuel = 0.0;
+
+        public Vehicle(double distance, double hour, double fuel) {
+            this.distance = distance;
+            this.hour = hour;
+            this.fuel = fuel;
+        }
+
+        public virtual void Average() {
+            double average = 0.0;
+            average = distance / fuel;
+            System.Console.WriteLine("Vehicle Average is {0:0.00}", average);
+        }
+
+        public virtual void Speed() {
+            double speed = 0.0;
+            speed = distance / hour;
+            System.Console.WriteLine("Vehicle Average is {0:0.00}", speed);
+        }
+    }
+
+    public class Car : Vehicle {
+        public Car(double distance, double hour, double fuel)
+            : base(distance, hour, fuel) {
+        }
+
+        public override void Average() {
+            double average = 0.0;
+            average = distance / fuel;
+            System.Console.WriteLine("Vehicle Average is {0:0.00}", average);
+        }
+
+        public override void Speed() {
+            double speed = 0.0;
+            speed = distance / hour;
+            System.Console.WriteLine("Vehicle Average is {0:0.00}", speed);
+        }
+    }
+}

bin/Debug/net5.0/ooad-csharp-oop.deps.json

@@ -0,0 +1,23 @@
+{
+  "runtimeTarget": {
+    "name": ".NETCoreApp,Version=v5.0",
+    "signature": ""
+  },
+  "compilationOptions": {},
+  "targets": {
+    ".NETCoreApp,Version=v5.0": {
+      "ooad-csharp-oop/1.0.0": {
+        "runtime": {
+          "ooad-csharp-oop.dll": {}
+        }
+      }
+    }
+  },
+  "libraries": {
+    "ooad-csharp-oop/1.0.0": {
+      "type": "project",
+      "serviceable": false,
+      "sha512": ""
+    }
+  }
+}

bin/Debug/net5.0/ooad-csharp-oop.runtimeconfig.dev.json

@@ -0,0 +1,8 @@
+{
+  "runtimeOptions": {
+    "additionalProbingPaths": [
+      "C:\\Users\\DELL\\.dotnet\\store\\|arch|\\|tfm|",
+      "C:\\Users\\DELL\\.nuget\\packages"
+    ]
+  }
+}

bin/Debug/net5.0/ooad-csharp-oop.runtimeconfig.json

@@ -0,0 +1,9 @@
+{
+  "runtimeOptions": {
+    "tfm": "net5.0",
+    "framework": {
+      "name": "Microsoft.NETCore.App",
+      "version": "5.0.0"
+    }
+  }
+}

obj/Debug/net5.0/.NETCoreApp,Version=v5.0.AssemblyAttributes.cs

@@ -0,0 +1,4 @@
+// <autogenerated />
+using System;
+using System.Reflection;
+[assembly: global::System.Runtime.Versioning.TargetFrameworkAttribute(".NETCoreApp,Version=v5.0", FrameworkDisplayName = "")]

obj/Debug/net5.0/ooad-csharp-oop.AssemblyInfo.cs

@@ -0,0 +1,22 @@
+//------------------------------------------------------------------------------
+// <auto-generated>
+//     This code was generated by a tool.
+//
+//     Changes to this file may cause incorrect behavior and will be lost if
+//     the code is regenerated.
+// </auto-generated>
+//------------------------------------------------------------------------------
+
+using System;
+using System.Reflection;
+
+[assembly: System.Reflection.AssemblyCompanyAttribute("ooad-csharp-oop")]
+[assembly: System.Reflection.AssemblyConfigurationAttribute("Debug")]
+[assembly: System.Reflection.AssemblyFileVersionAttribute("1.0.0.0")]
+[assembly: System.Reflection.AssemblyInformationalVersionAttribute("1.0.0")]
+[assembly: System.Reflection.AssemblyProductAttribute("ooad-csharp-oop")]
+[assembly: System.Reflection.AssemblyTitleAttribute("ooad-csharp-oop")]
+[assembly: System.Reflection.AssemblyVersionAttribute("1.0.0.0")]
+
+// Generated by the MSBuild WriteCodeFragment class.
+

obj/Debug/net5.0/ooad-csharp-oop.AssemblyInfoInputs.cache

@@ -0,0 +1 @@
+7b6ab281c8c6ab7e1e3827a9a4f484ff73b5835f

obj/Debug/net5.0/ooad-csharp-oop.GeneratedMSBuildEditorConfig.editorconfig

@@ -0,0 +1,10 @@
+is_global = true
+build_property.TargetFramework = net5.0
+build_property.TargetPlatformMinVersion = 
+build_property.UsingMicrosoftNETSdkWeb = 
+build_property.ProjectTypeGuids = 
+build_property.PublishSingleFile = 
+build_property.IncludeAllContentForSelfExtract = 
+build_property._SupportedPlatformList = Android,iOS,Linux,macOS,Windows
+build_property.RootNamespace = ooad_csharp_oop
+build_property.ProjectDir = D:\RUPP-Year4\OOAD\Object Oriented Programming\ooad-csharp-oop\

obj/Debug/net5.0/ooad-csharp-oop.csproj.CoreCompileInputs.cache

@@ -0,0 +1 @@
+509c4ee89f47d0d75b991614751ade6eb08e7501

obj/Debug/net5.0/ooad-csharp-oop.csproj.FileListAbsolute.txt

@@ -0,0 +1,16 @@
+D:\RUPP-Year4\OOAD\Object Oriented Programming\ooad-csharp-oop\bin\Debug\net5.0\ooad-csharp-oop.exe
+D:\RUPP-Year4\OOAD\Object Oriented Programming\ooad-csharp-oop\bin\Debug\net5.0\ooad-csharp-oop.deps.json
+D:\RUPP-Year4\OOAD\Object Oriented Programming\ooad-csharp-oop\bin\Debug\net5.0\ooad-csharp-oop.runtimeconfig.json
+D:\RUPP-Year4\OOAD\Object Oriented Programming\ooad-csharp-oop\bin\Debug\net5.0\ooad-csharp-oop.runtimeconfig.dev.json
+D:\RUPP-Year4\OOAD\Object Oriented Programming\ooad-csharp-oop\bin\Debug\net5.0\ooad-csharp-oop.dll
+D:\RUPP-Year4\OOAD\Object Oriented Programming\ooad-csharp-oop\bin\Debug\net5.0\ref\ooad-csharp-oop.dll
+D:\RUPP-Year4\OOAD\Object Oriented Programming\ooad-csharp-oop\bin\Debug\net5.0\ooad-csharp-oop.pdb
+D:\RUPP-Year4\OOAD\Object Oriented Programming\ooad-csharp-oop\obj\Debug\net5.0\ooad-csharp-oop.csproj.AssemblyReference.cache
+D:\RUPP-Year4\OOAD\Object Oriented Programming\ooad-csharp-oop\obj\Debug\net5.0\ooad-csharp-oop.GeneratedMSBuildEditorConfig.editorconfig
+D:\RUPP-Year4\OOAD\Object Oriented Programming\ooad-csharp-oop\obj\Debug\net5.0\ooad-csharp-oop.AssemblyInfoInputs.cache
+D:\RUPP-Year4\OOAD\Object Oriented Programming\ooad-csharp-oop\obj\Debug\net5.0\ooad-csharp-oop.AssemblyInfo.cs
+D:\RUPP-Year4\OOAD\Object Oriented Programming\ooad-csharp-oop\obj\Debug\net5.0\ooad-csharp-oop.csproj.CoreCompileInputs.cache
+D:\RUPP-Year4\OOAD\Object Oriented Programming\ooad-csharp-oop\obj\Debug\net5.0\ooad-csharp-oop.dll
+D:\RUPP-Year4\OOAD\Object Oriented Programming\ooad-csharp-oop\obj\Debug\net5.0\ref\ooad-csharp-oop.dll
+D:\RUPP-Year4\OOAD\Object Oriented Programming\ooad-csharp-oop\obj\Debug\net5.0\ooad-csharp-oop.pdb
+D:\RUPP-Year4\OOAD\Object Oriented Programming\ooad-csharp-oop\obj\Debug\net5.0\ooad-csharp-oop.genruntimeconfig.cache

obj/Debug/net5.0/ooad-csharp-oop.genruntimeconfig.cache

@@ -0,0 +1 @@
+34449263d8659535b6222a9aa6e0c4f246eee350