MULTILEVEL INHERITANCE

#include
#include
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.: “<< rno;<<”\n”;
cout<<”Name : “<< name<<”\n”;
cout<<"Address :”<< address<<”\n”;
}
class mark:public student
{
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<< mark1<< endl;
cout<< mark1<< endl;
cout<< mark2<< endl;
cout<< mark3<< endl;
cout<< mark4<< endl;
cout<< mark5<< endl;
cout<<“Total =“<< total<< endl;
cout<<“Average =“<< avg<< endl;
}
class result: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 && avg>=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