Multiple Inheritance

Multiple Inheritance
Deriving a new derived class from more then one base class is called multiple inheritance

Class C is derived from two base classes A and B, here class A and Class B is called base class and class C is called derived class. Using derived class object, we can access the members of both derived and base classes. But using Base class object we can not access members of derived class.

Example:
header files

class student
{
int rno;
char name[50];
char address[30];
public:
void get();
void display();
};
void student::get()
{
cout<<”Enter the Student Roll Number:”;

cin>> rno;
cout<<”Enter the student Name :”;

cin>> name;
cout<<”Enter the Student Address:”;

cin>> address;
}
void student::display()
{
cout<<”Roll No.: “<<>

cout<<”Name : “<<>

cout<<"Address :”<<>

}

class mark

{

int mark1, mark2, mark3, mark4, mark5;

float avg;

public:

void getmark();

void displaymark();

};

void mark::getmark()

{

cout<<”Enter the five subject Marks one by one”<<”\n”; cin>>mark1>>mark2>>mark3>>mark4>>mark5;
total=mark1+ mark2+ mark3+ mark4+ mark;
avg=total/5;
}
void mark::displaymarks()
{
cout<<>

cout<<>

cout<<>

cout<<>

cout<<>

cout<<>

cout<<“Total =“<<>

cout<<“Average =“<<>

}

class result:public student, public mark

{

public:

void check();

};

void result::check()

{

if(avg>=90)
{
cout<”Distinction”;

}

else if(avg<=80 && avg>=60)
{
cout<<”I Class”;

}

else if(avg<60>=40)
{
cout<<”II Class”;

}

else cout<<”Fail”;

}

void main()

{

clrscr();

result obj1;

obj1.get();

obj1.getmark();

obj1.diaplay();

obj1.displaymark();

obj1.check();

getch();

}

Output will be

Enter the Student Roll Number: 101

Enter the student Name: Lak

Enter the Student Address: Chennai

Enter the five subject Marks one by one

80

75

80

90

100

Total = 425

Average = 85

I Class