using classes

[taz_beginner]

This program is using classes to perform various banking functions(i am a beginner)
how can i make it withdraw client money and display all clients account balances?

// bank account program

#include <iostream.h>

const m=50;

class BANK
{
	char name[10],Atype[10];
	int accountno[m],count;
	float balance[m],amount[m];

public:
	void CNT(void){count=0;} //initialising count
	void getitem(void);
	void displayAll(void);
	void deposit(void);
	void remove(void);
	void displaySum(void);
};

//===================================================

void BANK :: getitem(void) //creates an account
{
	cout<<" \nEnter your name please\n";
	cin>>name[count];
	cout<<" \nEnter the type of account you'd like,\n";
	cout<<" \nEither a \n1. current,\n2. Savings or \n3. Fixed account\n";
	cin>>Atype;
	cout<<" \nEnter account number: ";
	cin>>accountno[count];
}

void BANK :: deposit(void) // depositting amounts
{
	
	cout<<" \nPlease enter your account number\n";
	cin>> accountno[count];
	cout<<" \nPlease Enter the amount you are depositting\n";
	cin>>amount[count];
	cout<<"\n The amount has been creditted to your account\n";
	cout<<"\n Have a good day\n";
	count++;

}
void BANK :: displaySum(void) //displays amount
{
	float balance = 0;
	for (int i=0; i<count; i++)
		balance = balance + amount[i];

	cout<<"\n You have :" <<balance;
}
	

/*void BANK :: remove(void) //withdrawals
int a;
cout<<" \nEnter Account number";
cin>>accountno;
cout<<"\n You have :"<<balance;
cout<"\n Enter amount to withdrawn";
cin>>a;

for (int i=0; i<count; i++)
if (a<balance)
{
	balance = balance-a
}
cout<<" Final balance: "<<balance*/

void BANK ::displayAll(void)
{
cout<<"\nName	Balance\n";

for(int i=0; i<count; i++)
{
	cout<<"\n" <<name[i];
	cout<<"\n" <<balance[i];
	cout<<"\n";
}
}

//================================================================

int main()
{
	BANK client;
	client.CNT();
	int x;

	do
	{
		cout<<"\n-----------------------------------------------------";
		cout<<"\n You can do the following;"
			<<" Enter appropriate number\n";
		cout<<"\n1 : Add a client ";
		cout<<"\n2 : Deposit amounts ";
		cout<<"\n3 : Display depositted amount ";
		cout<<"\n4 : Withdraw amounts ";
		cout<<"\n5 : Display client balance ";
		cout<<"\n6 : Quit";
		cout<<"\n\n What would you like to do?";

		cin>> x;

		switch(x)
		{
		case 1 : client.getitem();break;
		case 2 : client.deposit();break;
		case 3 : client.displaySum();break;
		case 4 : break;
		case 5 : client.displayAll();break;
		case 6 : cout<<" \nThis program was created by Taz,for more information visit www.taz.com\n";break;
		default : cout<<" Please input a choice between 1 and 5\n";
		}
	} while (x!=6); 

	return 0;
}

eagerly awaiting a response,