sample program for handling dabase of a bank using class

here the program is just to give an overview of  a bank  database using class.object oriented programing is used to handle large database and when we have data in mass then we need to securly handle it . when we are talking about data then the first thing about which we are concerned is it's security and c++ provide this facility so this program is giving an overview that how database can be handled using c++ .


#include<iostream.h>                                               //including header file
#include<conio.h>
class bank                                                                    // defining class
{
int ac_name,w;                                                     // declairing data members
char name[20];
char ac_type[20];
int bal,add;
public:                              
void insert();                                                           // declairing member function
void deposit();
void withdraw();
void display();

};
void bank:: insert()                                                               //defining memebr functions
{       bank b;
cout<<"enter your ac no.";
cin>>b.ac;
cout<<"enter your name";
cin>>b.name;
cout<<"enter your account type";
cin>>b.ac_type;
cout<<"enter the balance";
cin>>b.bal;

}
void bank::deposit()
{       bank b2;
cout<<"enter the amout to deposit";
cin>>b2.add;
b2.bal=b2.bal+b2.add;
}
void bank::withdraw()
{
bank b3;
//int x;
cout<<"enter the amount to withdarw";
cin>>b3.w;
b3.bal=b3.bal-b3.w;

}
void bank::display()                                    
{
bank b4;
cout<<"the name and current balance of account is="<<b4.name<<endl<<b4.bal;


}
void main()                                                             //main part of the program
{       clrscr();
bank t1,t2,t3,t4;
t1.insert();
t2.deposit();
t3.withdraw();
t4.display();
}