public void Init()
{
//The same object will be used for two cards so we are creating a scenario of a joint card.
jointAccount = new Account(123456, 10f);
//Card number should be ideally digits but for card recognition simulation,
//we will make it four digits card.
//Card 1
card1 = new CashCard("4512", 2535);
card1.LinkAccount(jointAccount); //Registering same account to both cards.
//Card 1
card2 = new CashCard("4513", 2535);
card2.LinkAccount(jointAccount);
}