Computer Science Homework Solutions
Problem
#131339

C++ linked list pointers

given the attached code, what is the values of the following expressions.

They may be undefined or the boolean expression may be invalid

a) firstptr->next->firstname
b) firstptr->next-next->SSN
c) firstptr->next==lastptr
d) currptr->next->lastname
e) currptr->next->lastname
f)  firstptr==lastptr->next
g)firstptr->SSNnext->SSN

Attached file(s):
Attachments
point.txt  View File

Attachment Content Summary (Note: view attachment at the above link before purchasing. Actual attachment content may vary slightly from that shown below.)

point.txt
struct personaldata
{
string firstname;
string lastname;
int ssn;
personal data* next;
}

personaldata* currptr;
personaldata* firstptr;
personaldata* lastptr;
}

currptr = null;
firstptr = null;
lastptr = null;

currptr = new personaldata;
currptr->firstname = "sally";
currptr->lastname = "simon";
currptr->ssn = 12346789;
currptr->next = new personaldata;
lastptr=currptr->next;
lastptr->firstname = "george";
lastptr->lastname = "gunther";
lastptr->ssn = 127608712;
firsptr = new persondata;
lastptr->next = firstptr;
firstptr->firstname = "mary";
firstptr->lastname = "mae";
firstptr->ssn = 23855555;
firstptr->next = currptr;

Solution Summary

Linked list of pointers is explored.

Solution
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