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lec0211-templates - Todays announcements MP2 available due...

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Today’s announcements: MP2 available, due 2/11, 11:59p. MP3 available, EC due 2/18, 11:59p, due 2/25, 11:59p. Lab03 will be continued this week, due 2/13, 11:59p. DYB today, 6-8p, Siebel 2407.
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Constructors for derived class: ball::ball():sphere() { name = “not known”; } ball b; ball::ball(double r, string n): sphere(r) { name = n; } ball b(0.5,”grape”); class Base{ public: Base(){cout<<”Ctor: B"<<endl;} ~Base(){cout<<”Dtor: B"<<endl;} }; class Derived: public Base{ public: Derived(){cout<<”Ctor: D"<<endl;} ~Derived(){cout<<”Dtor: D"<<endl;} }; “virtual” destructors: void main(){ Base * V = new Derived(); delete V; }
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class flower { public: flower(); virtual void drawBlossom() = 0; virtual void drawStem() = 0; virtual void drawFoliage() = 0; }; class daisy:public flower { public: virtual void drawBlossom(); virtual void drawStem(); virtual void drawFoliage(); private: int blossom; // number of petals int stem; // length of stem int foliage // leaves per inch }; Abstract Base Classes: void daisy::drawBlossom() { // whatever } void daisy::drawStem() { // whatever } void daisy::drawFoliage() { // whatever } flower f; daisy d; flower * fptr;
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