#include<iostream.h>
#include<string.h>

class Customer;
{
    friend void displayAsFriend(Customer);
private:
    int custNum;
    double balanceDue;
public:
    Customer(int=0, double=0.0);
    void displayCustomer();
};
Customer :: Customer(int num,double balance)
{
    custNum=0;
    balanceDue=0.0;
}
void Customer :: displayCustomer()
{
    cout<<"In the member function"<<endl;
    cout<<"Customer #"<<custNum<<" has balance of RM"<<cust.custNum<<endl;
}
void Customer :: displayAsFriend(Customer cust)
{
    cout<<" In the friend function: "<<endl;
    cout<<" Customer #"<<cust.custNum<<" has a balance of RM "<<cust.balanceDue<<endl;
}

int main()
{
    Customer.onePatron(3815,259.25);
    Customer.display.Customer();
    displayAsFriend(onePatron);
}