Write A Program In C++ to Implement The Idea Of Multiple Inhertance.

#include<iostream>
#include<conio.h>
#include<stdio.h>
class student
{
  int roll;
  char name[20];
 public:
   void getDetails()
   {
    cout<<"Enter The Roll And Name Of Student:";
    cin>>roll>>name;
    //gets(name);
   }
   void putDetails()
   {
    cout<<"Roll is: "<<roll;
    cout<<"Name is: "<<name;
   }
};

class marks:public student
{
  float m1,m2,m3;
 public:
   void getMarks()
   {
    cout<<"Enter the marks of two subject: ";
    cin>>m1>>m2;
   }
  void putMarks()
  {
   cout<<"Marks Are: "<<m1<<" "<<m2;
  }
 protected:
  int sum()
  {
   m3=m1+m2;
   cout<<"sum of marks is: "<<m3;
   return(m3);
  }
};

class result:public marks
{
 public:
   void getData()
   {
    getDetails();
    getMarks();
   }
  void putData()
  {
   putDetails();
   PutMarks();
   sum();
  }
};

void main()
{
 clrscr();
 result obj;
 obj.getData();
 obj.putData();
 getch();
}