composite code

composite/composite/app.d

@@ -0,0 +1,22 @@
+import companydirectory, developer, employee, manager;
+
+void main()
+{
+    auto dev1 = new Developer(100, "Lokesh Sharma", "Pro Developer");
+    auto dev2 = new Developer(101, "Vinay Sharma", "Developer");
+    auto engDirectory = new CompanyDirectory();
+    engDirectory.addEmployee(dev1);
+    engDirectory.addEmployee(dev2);
+
+    auto man1 = new Manager(200, "Kushagra Garg", "SEO Manager");
+    auto man2 = new Manager(201, "Vikram Sharma ", "Kushagra's Manager");
+
+    auto accDirectory = new CompanyDirectory();
+    accDirectory.addEmployee(man1);
+    accDirectory.addEmployee(man2);
+
+    auto directory = new CompanyDirectory();
+    directory.addEmployee(engDirectory);
+    directory.addEmployee(accDirectory);
+    directory.showEmployDetails();
+}

composite/composite/companydirectory.d

@@ -0,0 +1,23 @@
+module companydirectory;
+
+import employee, developer, manager;
+import std.stdio : writeln;
+import std.algorithm : remove;
+
+class CompanyDirectory : Employee
+{
+    private Employee[] employee;
+
+    override void showEmployDetails()
+    {
+        foreach (Employee val; employee)
+        {
+            val.showEmployDetails();
+        }
+    }
+
+    void addEmployee(Employee employee)
+    {
+        this.employee ~= employee;
+    }
+}

composite/composite/developer.d

@@ -0,0 +1,24 @@
+module developer;
+
+import employee;
+import std.stdio : writeln;
+
+class Developer : Employee
+{
+private:
+    string name;
+    int empId;
+    string position;
+public:
+    this(int empId, string name, string position)
+    {
+        this.empId = empId;
+        this.name = name;
+        this.position = position;
+    }
+
+    override void showEmployDetails()
+    {
+        writeln(empId, " ", name, " ", position);
+    }
+}

composite/composite/employee.d

@@ -0,0 +1,6 @@
+module employee;
+
+interface Employee
+{
+    void showEmployDetails();
+}

composite/composite/manager.d

@@ -0,0 +1,24 @@
+module manager;
+
+import employee;
+import std.stdio : writeln;
+
+class Manager : Employee
+{
+private:
+    string name;
+    int empId;
+    string position;
+public:
+    this(int empId, string name, string position)
+    {
+        this.empId = empId;
+        this.name = name;
+        this.position = position;
+    }
+
+    override void showEmployDetails()
+    {
+        writeln(empId, " ", name, " ", position);
+    }
+}