repo update

Lecture/Week5/Lab5.txt

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+Shape class
+    data:
+        color (required)
+        1st point
+        # points
+    functions:
+        constructor(color)? <- optional
+            shape::shape(...) <- do this in child?
+        copy constructor
+        assignment operator
+        destructor (virtual)
+        draw <- pure virtual
+            Shape::draw(Graphics context gc)
+            gc->setColor(color)
+
+
+
+
+
+Shape * S1 = new Line(...)
+Shape * S2 = new Triangle(...)
+
+S1->draw(...) draw Line
+S2->draw(...) draw Triangle
+
+
+Image class

Lecture/Week5/main.cpp

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+#include <iostream>
+using namespace std;
+class Pet{
+    public:
+        string name;
+        void set_data(int data){}
+};
+
+class Cat: public Pet{
+    public:
+        int fish;
+        void set_data(int data){fish = data;}
+};
+
+class Bird: public Pet{
+    public:
+        int seed;
+        void set_data(int data){seed = data;}
+
+};
+
+int main(){
+    Pet* C1 = new Cat;
+    Pet* C2 = new Cat;
+    C1->name = "Cat1";
+    C1->set_data(1);
+
+}