c++

July 5, 2020 0 comments

Program to check why we need the concept of virtual base class when a single variable passed through different paths creating ambiguity.

#include #include class first { public: int x; }; class second:virtual public first { public: void getdata() { cout<>x; } void display() { cout<<"n Entered Value of X by means of second class is: "<<x; } }; class third:virtual public first { public: void getdata() { cout<>x; } void display() { cout<<"n Entered Value of […]

July 5, 2020 0 comments

Program to implement the concept of abstract base class with all its functions as pure virtual functions.

#include #include class trial { public: virtual void getdata()=0; virtual void display()=0; }; class basic:public trial { private: int x; public: void getdata() { cout<>x; } void display() { cout<<"n Entered Value of X was : "<<x<<"n"; } }; class salary:public basic { private: int x; public: void getdata() { cout<>x; } void display() { […]

July 5, 2020 0 comments

Program to implement the concept of late binding by applying the concept of forceful casting.

#include #include class sqr { protected: int x; public: virtual void getdata(); virtual void display(); virtual int area(); }; class rect :public sqr { protected: int y; public: void getdata(); void display(); int area(); }; void sqr::getdata() { cout<>x; } void sqr::display() { int ar; ar=area(); cout<<"n Value of One side : "<<x; cout<<"n Value […]

July 5, 2020 0 comments

Program to calculate the area of circle and rectangle by using function overloading concept under polymorphism.

# include # include void area (float r) ; void area (float l, float b) ; void main () { float r1, l1, b1 ; clrscr () ; cout <> r1 ; cout <> l1 ; cout <> b1 ; cout << "nArea of circle is: " ; area(r1) ; cout << "nArea of rectangle […]

July 5, 2020 0 comments

Program to implement the concept of “Behaviour of constructor and destructor under inheritance”.

#include #include class first { public: first() { cout<<"nBIRTH OF OBJECT OF CLASS FIRST" ; } ~first() { cout<<"nDEATH OF OBJECT OF CLASS FIRST" ; } }; class second : public first { public: second() { cout<<"n BIRTH OF OBJECT OF CLASS SECOND" ; } ~second() { cout<<"n DEATH OF OBJECT OF CLASS SECOND"; } […]

July 5, 2020 0 comments

Program to implement the concept of “behaviour of destructor under inheritance”.

#include #include class first { public: ~first( ) { cout<<"n DEATH OF OBJECT OF CLASS FIRSTn"; } }; class second : public first { public: ~second( ) { cout<<"n DEATH OF OBJECT OF CLASS SECONDn" ; } }; class third : public second { public: ~third( ) { cout<<"n DEATH OF OBJECT OF CLASS THIRDn" […]

July 5, 2020 0 comments

Program using virtual function causing defined behaviour.

#include #include class base { public: base() { cout<<"Constructing base n"; } virtual ~base() { cout<<"Destructing base n"; } }; class derived: public base { public: derived() { cout<<"Constructing derived n"; } ~derived() { cout<<"Destructing derived n"; } }; void main() { clrscr(); derived *d = new derived(); base *b = d; delete b; getch(); […]

July 5, 2020 0 comments

Program without virtual function causing undefined behaviour.

#include #include class base { public: base( ) { cout<<"Constructing base n"; } ~base( ) { cout<<"Destructing base n"; } }; class derived: public base { public: derived() { cout<<"Constructing derived n"; } ~derived( ) { cout<<"Destructing derived n"; } }; main( ) { clrscr(); derived *d = new derived(); base *b = d; delete […]

July 5, 2020 0 comments

Program to implement the concept of behaviour of constructor under inheritance.

include #include class first { public: first() { cout<<"n BIRTH OF OBJECT OF CLASS FIRST" ; } }; class second : public first { public: second() { cout<<"n BIRTH OF OBJECT OF CLASS SECOND" ; } }; class third : public second { public: third() { cout<<"n BIRTH OF OBJECT OF CLASS THIRD" ; } […]

July 5, 2020 0 comments

Program for the implementation of hybrid inheritance.

#include #include class student { protected: int roll_number; public: void get_number(int a) { roll_number=0; } void put_number() { cout<<roll_number<<endl; } }; class test:public student { protected: float sub1,sub2; public: void get_marks(float x,float y) { sub1=x; sub2=y; } void put_marks() { cout<<sub1<<endl<<sub2<<endl; } }; class score { protected: float score; public: void get_score(float s) { score=s; […]