#include <iostream>
using namespace std;
#include <conio.h>
class base
{
protected:
string name;
long long int rollno, phno;
string address;
public:
void getdata()
{
cout << "\nENTER NAME:" << endl;
cin >> name;
cout << "\nENTER ROLL NO.:" << endl;
cin >> rollno;
cout << "\nENTER PHONE NO. :"
<< endl;
cin >> phno;
cout << "\nENTER ADDRESS:"
<< endl;
cin >> address;
}
};
class derived : public base
{
private:
long long int s1, s2, total;
public:
void getdataderived()
{
cout << "\nENTER MARKS OF FIRST SESSIONAL:" << endl;
cin >> s1;
cout << "\nENTER MARKS OF SECOND SESSIONAL::" << endl;
cin >> s2;
total = (int)(s1 + s2);
}
void showdetails()
{
cout << "NAME IS " << name << endl;
cout << "ROLL NO. IS " << rollno << endl;
cout << "PHONE NO. IS " << phno << endl;
cout << "ADDRESS IS " << address << endl;
cout << "TOTAL MARKS ARE " << total << endl;
}
};
int main()
{
system("cls");
int size;
cout << "ENTER THE NUMBER OF STUDENTS YOU WANNA SAVE DATA OF\n";
cin >> size;
derived obj[size];
for (int i = 0; i < size; i++)
{
cout << "ENTER THE DATA OF STUDENT: " << i + 1 << endl;
obj[i].getdata();
obj[i].getdataderived();
system("cls");
}
system("cls");
cout << "DATA OF STUDENT BEFORE ANY MODIFICATIONS\n";
for (int i = 0; i < size; i++)
{
cout << "DATA OF STUDENT " << i + 1 << endl;
obj[i].showdetails();
cout << endl;
}
int serial;
cout << "ENTER SERIAL NUMBER OF STUDENT YOU WANNA MODIFY DATA OF\n";
cin >> serial;
cout << "ENTER THE NEW DATA\n";
obj[serial - 1].getdata();
obj[serial - 1].getdataderived();
system("cls");
cout << "DATA OF STUDENT AFTER MODIFICATIONS\n";
for (int i = 0; i < size; i++)
{
cout << "DATA OF STUDENT " << i + 1 << endl;
obj[i].showdetails();
cout << endl;
}
return 0;
}