Multilevel Inheritance.

Write a C++ program to find out the student details using multilevel inheritance.

Program Algorithm:

Step 1: Include the header files

Step 2: Declare the base class student.

Step 3: Declare and define the function get_ number ( ) and put_number( ).

Step 4: Declare the derived class test for student

Step 5: Declare and define the function get_ marks ( ) and put_marks( ).

Step 6: Declare the derived class result for test

Step 7: Declare and define the function display ( )

Step 8: Create objects for the derived class.

Step 9: Declare the derived class object, call the functions get_ number ( ), get_ marks ( ), display ( ).

Program Code in C++:

#include<iostream.h>

#include<conio.h>

class student

{

protected:

int roll;

public:

void get_number(int a)

{

roll = a;

}

void put_number()

{

cout<<"Roll Number: "<<roll<<"\n";

}

};

class test : public student

{ 

protected:

float sub1;

float sub2;

public:

void get_marks(float x,float y)

{

sub1 = x;

sub2 = y;

}

void put_marks()

{

cout<<"Marks in Subject 1 = "<<sub1<<"\n";

cout<<"Marks in Subject 2 = "<<sub2<<"\n";

}

};

class result : public test

{ 

private:

float total;

public:

void display()

{

total = sub1 + sub2;

put_number();

put_marks();

cout<<"Total = "<<total<<"\n";

}

};

void main()

{

clrscr();

result student;

student.get_number(183);

student.get_marks(90.0,70.5);

student.display();

getch();

}

Program Output:

Roll No: 183

Marks in sub 1: 90

Marks in sub 2: 70.5

Total: 160.5