#include <iostream>
using namespace std;

class bank {
    public :
    string AccountHolder;
    int AccountNumber;
    double balance;

    bank ( string AccountHolder, int AccountNumber,  double balance) {
        this->AccountHolder = AccountHolder;
        this->AccountNumber = AccountNumber;
        this->balance = balance;
    }

    void deposit (double amount) {
        balance += amount;
   }
   void withDrawal(double amount);

   friend void display (bank bank);
};
 void bank::withDrawal(double amount) {

       if (balance > amount ){
        balance -= amount;
       }
       else {
        cout << "balance < amount "<<endl;
       }
   }

void display (bank bank) {
   cout << "AccountHolder : " << bank.AccountHolder << ", AccountNumber : " << bank.AccountNumber << ", balance : " << bank.balance << endl;
   };


int main()
{

    bank s1 = {"mogo", 78904, 1090};

    s1.deposit(24.5);
    s1.withDrawal(9.5);
    display(s1);
    return 0;
}

#include <iostream>
using namespace std;

class subjects
{
protected:
    string name;
    int oop;
    int math;
    int english;
    public:
    subjects(string name,int oop ,int math,int english){

       this->name=name;
       this->oop=oop;
       this->math=math;
       this->english=english;
    }

int sum()
{
      return oop + math + english;
}
};

    class studentavrage{
public:

void avrage(double s){
        cout << "Average: " <<s/3 << endl;
    }
};
class student:public subjects,public studentavrage{
    public:
student(string name,int oop,int math,int english):subjects(name,oop,math,english){}
};
        int main() {

            student s1("yas",90,77,56);
             double a= s1.sum();
            s1.avrage(a);

    return 0;
        }