2. http://cs.mst.edu Object-Oriented Paradigm

3. http://cs.mst.edu The Concept  Bundled together in one object  Data Types  Functionality  Encapsulation  State variables used to describe the object  Functions dictating how the object interacts and interfaces with other entities

4. http://cs.mst.edu Your First Class class name_of_type { public: // function prototypes here private: // member data here };

5. http://cs.mst.edu Your First Class class name_of_type { public: // function prototypes here private: // member data here }; class Fraction { public: void readin(); void print(); Fraction reciprocal(); void unreduced(const int m); private: int m_Numerator; int m_Denominator; };

6. http://cs.mst.edu Your First Class class name_of_type { public: // function prototypes here private: // member data here }; class Fraction { public: void readin(); void print(); Fraction reciprocal(); void unreduced(const int m); private: int m_Numerator; int m_Denominator; };

7. http://cs.mst.edu Your First Class class name_of_type { public: // function prototypes here private: // member data here }; class Fraction { public: void readin(); void print(); Fraction reciprocal(); void unreduced(const int m); private: int m_Numerator; int m_Denominator; };

8. http://cs.mst.edu Your First Class class name_of_type { public: // function prototypes here private: // member data here }; class Fraction { public: void readin(); void print(); Fraction reciprocal(); void unreduced(const int m); private: int m_Numerator; int m_Denominator; };

9. http://cs.mst.edu Your First Class class name_of_type { public: // function prototypes here private: // member data here }; class Fraction { public: void readin(); void print(); Fraction reciprocal(); void unreduced(const int m); private: int m_Numerator; int m_Denominator; };

10. http://cs.mst.edu Your First Class class name_of_type { public: // function prototypes here private: // member data here }; class Fraction { public: void readin(); void print(); Fraction reciprocal(); void unreduced(const int m); private: int m_Numerator; int m_Denominator; };

11. http://cs.mst.edu Private By Default class Fraction { public: void readin(); void print(); Fraction reciprocal(); void unreduced(const int m); private: int m_Numerator; int m_Denominator; }; class Fraction { int m_Numerator; int m_Denominator; public: void readin(); void print(); Fraction reciprocal(); void unreduced(const int m); };

12. http://cs.mst.edu Private By Default class Fraction { public: void readin(); void print(); Fraction reciprocal(); void unreduced(const int m); private: int m_Numerator; int m_Denominator; }; class Fraction { int m_Numerator; int m_Denominator; public: void readin(); void print(); Fraction reciprocal(); void unreduced(const int m); };

13. http://cs.mst.edu Definition and Use //fraction.h #ifndef FRACTION_H #define FRACTION_H class Fraction { public: void readin(); void print(); Fraction reciprocal(); void unreduced(const int m); private: int m_Numerator; int m_Denominator; }; #endif #include “fraction.h” int main() { Fraction f, g; f.m_Numerator = 7; f.readin(); f.print(); f.unreduce(5); return 0; }

14. http://cs.mst.edu Definition and Use //fraction.h #ifndef FRACTION_H #define FRACTION_H class Fraction { public: void readin(); void print(); Fraction reciprocal(); void unreduced(const int m); private: int m_Numerator; int m_Denominator; }; #endif #include “fraction.h” int main() { Fraction f, g; f.m_Numerator = 7; f.readin(); f.print(); f.unreduce(5); return 0; }

15. http://cs.mst.edu Definition and Use //fraction.h #ifndef FRACTION_H #define FRACTION_H class Fraction { public: void readin(); void print(); Fraction reciprocal(); void unreduced(const int m); private: int m_Numerator; int m_Denominator; }; #endif #include “fraction.h” int main() { Fraction f, g; f.m_Numerator = 7; f.readin(); f.print(); f.unreduce(5); return 0; } //won’t compile!

16. http://cs.mst.edu Definition and Use //fraction.h #ifndef FRACTION_H #define FRACTION_H class Fraction { public: void readin(); void print(); Fraction reciprocal(); void unreduced(const int m); private: int m_Numerator; int m_Denominator; }; #endif #include “fraction.h” int main() { Fraction f, g; f.m_Numerator = 7; f.readin(); f.print(); f.unreduce(5); return 0; }

17. http://cs.mst.edu Definition and Use //fraction.h #ifndef FRACTION_H #define FRACTION_H class Fraction { public: void readin(); void print(); Fraction reciprocal(); void unreduced(const int m); private: int m_Numerator; int m_Denominator; }; #endif #include “fraction.h” int main() { Fraction f, g; f.m_Numerator = 7; f.readin(); f.print(); f.unreduce(5); return 0; }

18. http://cs.mst.edu Definition and Use //fraction.h #ifndef FRACTION_H #define FRACTION_H class Fraction { public: void readin(); void print(); Fraction reciprocal(); void unreduced(const int m); private: int m_Numerator; int m_Denominator; }; #endif #include “fraction.h” int main() { Fraction f, g; f.m_Numerator = 7; f.readin(); f.print(); f.unreduce(5); return 0; }

19. http://cs.mst.edu End of Session