TYPE OF DERIVATION THROUGH MULTILEVEL INHERITENCE
#include#include
#include
class student
{
protected:
char name[30];
char enroll[8];
public:
void input()
{
cout<<"Enter name of student";
gets(name);
cout<<"ENter enroll";
gets(enroll);
}
void output()
{
cout<<"Name of student is... "<
};
class course:public student
{
protected:
char cours[6];
public:
void input()
{
student::input();
cout<<"Enter course of student";
gets(cours);
}
void output()
{ student::output();
cout<<"Name of course is... "<
};
class subject:protected course
{
protected:
char sub[20];
public:
void input()
{
course::input();
cout<<"Enter subject of student";
gets(sub);
}
void output()
{ course::output();
cout<<"Name of subject is... "< }
};
class marks:private subject
{
protected:
int markss;
public:
void input()
{
subject::input();
cout<<"Enter marks of student";
cin>>markss;
}
void output()
{ subject::output();
cout<<"Marks of subject is... "<
};
void main()
{
clrscr();
marks a;
a.input();
a.output();
getch();
}
BELOW PROGRAM SHOW HOW PUBLIC MEMBER BECOME PRIVATE AND ACCESS BY OTHER DERIVE CLASS
#include
#include
#include
class student
{
protected:
char name[30];
char enroll[8];
public:
void input()
{
cout<<"Enter name of student";
gets(name);
cout<<"ENter enroll";
gets(enroll);
}
void output()
{
cout<<"Name of student is... "<
cout<<"Enroll of student is... "<
}
};
class course:public student
{
protected:
char cours[6];
public:
void input()
{
student::input();
cout<<"Enter course of student";
gets(cours);
}
void output()
{ student::output();
cout<<"Name of course is... "<
}
};
class subject:protected course
{
protected:
char sub[20];
public:
void input()
{
course::input();
cout<<"Enter subject of student";
gets(sub);
}
void output()
{ course::output();
cout<<"Name of subject is... "<
}
};
class marks:private subject
{
protected:
int markss;
public:
void input()
{
course::input();//here we can acces becouse input of course is protected
// in subject class
cout<<"Enter marks of student";
cin>>markss;
}
void output()
{ subject::output();
cout<<"Marks of subject is... "<
}
};
class sports:private marks
{
protected:
char sports_name[20];
public:
void input()
{
// subject::input(); // here input function of subject private in marks
//so it cannot access
cout<<"Enter fav sports of student";
gets(sports_name);
}
void output()
{ marks::output();
cout<<"fav sports of subject is... "<
}
};
void main()
{
clrscr();
sports a;
a.input();
a.output();
getch();
}
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