Write a C$++$ object$-$oriented program which performs maintenance on a singly linked list, based on information stored in a data file $($updates$.$txt$).$ The nodes in the linked list have the following structure:

struct nameOfNode

$\{$

string firstName;

string LastName;

int id;

double gpa

nameOfNode $*$ next;

$\}$

There is a pointer NameofNode $*$ first which points to the first node in the list and a pointer NameofNode $*$ last $($optional$)$ which points to the last node in the list.