static void Main(string[] args)
{
account a = new account(1, "abhijeet", 100000);
a.disp();
a.deposit(20000);
a.disp();
a.withdraw(15000);
a.disp();
account b = new account(2, "omkar", 200000);
b.disp();
b.deposit(20000);
b.disp();
b.withdraw(15000);
b.disp();
}