some changes ; mostly new examples

OOP/constructor/constructor.cpp

@@ -0,0 +1,20 @@
+#include <iostream>
+
+/*
+    Here we have a example of a Constructor ;
+    When we create a Class Object we auto-call the Constructor
+*/
+
+using namespace std;
+
+class MyClass {
+    public:
+        MyClass() { // This is the constructor!
+            cout << "Construct!";
+        }
+};
+
+int main() {
+    MyClass classobj; // When we create this the Constructor autocalls!
+    return 0;
+}