some changes ; mostly new examples

OOP/constructor/car_outside.cpp

@@ -0,0 +1,34 @@
+#include <iostream>
+
+/*
+    We copied the main function from the last example , but here we just have the Constructor outside of the class definition;
+    So the Constructor then gets defined like:
+        class::constructor
+    Like that you can make it more "readable";
+*/
+
+using namespace std;
+
+class Car {
+    public:
+        string brand;
+        string model;
+        int year;
+        Car(string x , string y, int z);
+};
+
+Car::Car(string x, string y, int z) {
+    brand = x;
+    model = y;
+    year = z;
+}
+
+int main() {
+    Car volvo("Volvo", "VolvoAuto", 1989);
+    Car volkswagen("Volkswagen", "Golf", 2004);
+
+    cout << volvo.brand << " " << volvo.model << " " << volvo.year << "\n";
+    cout << volkswagen.brand << " " << volkswagen.model << " " << volkswagen.year << "\n";
+
+    return 0;
+}