Consider the bank account objects created by
, with the password modification described in exercise
. Suppose that our banking system requires the ability to make joint accounts. Define a procedure
that accomplishes this.
should take three arguments. The first is a password-protected account. The second argument must match the password with which the account was defined in order for the
operation to proceed. The third argument is a new password.
is to create an additional access to the original account using the new password. For example, if
is a bank account with password
(define paul-acc (make-joint peter-acc 'open-sesame 'rosebud))
will allow one to make transactions on
using the name
and the password
. You may wish to modify your solution to exercise
to accommodate this new feature.
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