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#include<iostream.h>

#include<conio.h>


#include

class student

{

   protected:

       int rno;

       char nm[20];

   public:

       void getstud()

       {

	    cout<<"\n Enter Roll number  : ";

	    cin>>rno;

	    cout<<"\n Enter Student name : ";

	    cin>>nm;

       }

       void putstud()

       {

	    cout<<"\n Roll No : "<
	    cout<<"\n Name    : "<
       }

};

class acd_marks:virtual public student

{

   protected:

      float m1,m2,m3;

   public:

      void getacd()

      {

	   cout<<"\n Enter Academic Marks : ";

	   cout<<"\n M1 : ";

	   cin>>m1;

	   cout<<"\n M2 : 

	   cin>>m2;

	   cout<<"\n M3 : ";

	   cin>>m3;

      }

      void putacd()

      {

	   cout<<"\n M1 : "<
	   cout<<"\n M2 : "<
	   cout<<"\n M3 : "<
      }

};


class ext_marks:virtual public student

{

   protected:

      float marks;

   public:

      void getext()

      {

	  cout<<"\n Emter Extra Activity marks : ";

	  cout<<"\n Marks : ";

	  cin>>marks;

      }

      void putext()

      {

	  cout<<"\n Marks : "<
      }

};

class result:public acd_marks,public ext_marks

{

       float tot,grade;

   public:

       void getres()

       {

	   tot=m1+m2+m3+marks;

	   grade=tot/4.0;

       }

       void putres()

       {

	   cout<<"\n Total marks : "<
	   if(grade>70)

	   {

	       cout<<"\n Grade : A+";

	   }

	   else

	   {

	      if(grade>60)

	      {

		  cout<<"\n Grade : A";

	      }

	      else

	      {

		   if(grade>50)

		   {

		       cout<<"\n Grade : B";

		   }

		   else

		   {

		       cout<<"\n Grade : c";

		   }

	      }

	   }

       }

};

void main()

{

      result r[20];

      int i,n,ch;

      clrscr();

      while(1)

      {

	   cout<<"\n Build Master table : ";

	   cout<<"\n Calculate Total_marks & Grade : ";

	   cout<<"\n Exit : ";

	   cout<<"\n Enter Choice : ";

	   cin>>ch;

	   switch(ch)

	   {

		 case 1 : cout<<"\n How many records u enter .. : ";

			  cin>>n;

			  for(i=0;i
			  {

			      r[i].getstud();

			      r[i].getacd();

			      r[i].getext();

			      r[i].getres();

			  }

			  break;

		 case 2 : for(i=0;i
			  {

			      r[i].putstud();

			      r[i].putacd();

			      r[i].putext

			      r[i].putres();

			      cout<<"\n------------------------------";

			  }

			  break;

		 case 3 : exit(0);


		default : cout<<"\n Invalid Choice enter ...";

	   }

      }

      getch();

}
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