#include<iostream.h>
#include<conio.h> // for clrscr()
class Student
{
protected :
int rollno;
public:
void getrollno(int);
void prnrollno(void);
};
void Student :: getrollno(int a)
{ rollno=a;
}
void Student :: prnrollno(void)
{
cout<<"Roll No : "<<rollno<<"\n";
}
class Test : public Student
{
protected:
float sub1;
float sub2;
float sub3;
float total;
float perc;
char grade;
void calc(void);
public :
void getmarks(float, float, float);
void disp_result(void);
};
void Test :: calc(void)
{
total = sub1 + sub2 + sub3;
perc= (total/300)*100;
if(perc<40.00)
grade='D';
else if(perc<50.00)
grade='C';
else if(perc<60.00)
grade='B';
else
grade='A';
}
void Test :: getmarks(float x, float y, float z)
{
sub1 = x;
sub2 = y;
sub3 = z;
}
void Test :: disp_result(void)
{
calc();
cout<<"The Result is ...\n";
prnrollno();
cout<<"Subject1:"<<sub1<<"\n";
cout<<"Subject2:"<<sub2<<"\n";
cout<<"Subject3:"<<sub3<<"\n";
cout<<"Total:"<<total<<"\n";
cout<<"Grade:"<<grade<<"\n";
}
int main()
{
clrscr();
Test s1;
// process student
int rno;
cout<<"Enter Roll Number : ";
cin>>rno;
s1.getrollno(rno);
float f1,f2,f3;
cout<<"Enter marks in three subject:\n";
cin>>f1>>f2>>f3;
s1.getmarks(f1,f2,f3);
// display result
s1.disp_result();
getch();
return 0;
}