Linked LIST C++

I have a completed .h file but can't seems to get the .cpp file to work.

-----Driver file------.cpp file----Given in assignment

#include #include #include #include // for exit() using std::string; using std::cin; using std::cout; using std::cerr; using std::endl; using std::getline; using std::ifstream; #include "LinkedList.h" bool DEBUG = false; // toggles extra printing const string DEFAULT_INPUT_FILENAME = "project4-inputA.tab"; // Action characters in the input file const char ADMIT = 'A'; const char DISCHARGE = 'D'; const char VISIT = 'V'; const char FIND = 'F'; // Process the patient records in inputFilename void processPatients( string inputFilename ); int main( /*int argc, char* argv[] */){ // If just a return (' ') is entered, then use DEFAULT_INPUT_FILENAME. // Otherwise, read in the input filename from STDIN. string inputFilename; cout << "Please enter the input filename (or simply press return to use " << DEFAULT_INPUT_FILENAME << ") "; getline( cin, inputFilename); if( inputFilename == ""){ inputFilename = DEFAULT_INPUT_FILENAME; } // process transactions in the file processPatients( inputFilename ); return 0; } void processPatients( string inputFilename ){ LinkedList patientList; // list to store patients // open file ifstream fileStream; fileStream.open( inputFilename.c_str() ); // verify the file is opened correctly if( ! fileStream ){ cerr << "ERROR: Can not open input file " << inputFilename << "!" << endl; exit(1); } cout << "Importing patients from " << inputFilename << " ..." << endl; char action = '\0'; // while there's more patients to process // read in the action and make sure that we're not at the end of the file while( fileStream >> action ){ if( DEBUG ){ cout << "action: " << action << endl; } string name; switch( action ){ case ADMIT: // get the patient's name from the file fileStream >> name; // add them to the list patientList.insert( name ); if( DEBUG ){ patientList.printAll(); } break; case DISCHARGE: // get the patient's name from the file fileStream >> name; // remove them from the list patientList.remove( name ); if( DEBUG ){ patientList.printAll(); } break; case FIND: // get the patient's name from the file fileStream >> name; // look for this patient in the list patientList.print( name ); break; case VISIT: // display all patients in the list patientList.printAll(); break; default: cerr << "ERROR: Unknown action " << action << "!" << endl; exit(1); } } // close the file fileStream.close(); } 

-----------My work------- header file (.h)

#ifndef LINKEDLIST_H_INCLUDED

#define LINKEDLIST_H_INCLUDED

#include

using namespace std;

struct node

{

string data;

node* next;

};

class LinkedList{

private:

struct node *head;

public:

LinkedList();

struct node *ccreate(string):

void insert(string);

void remove(string);

void print(string);

void printAll();

};

--------My work------ (.cpp)-----Need help in this file

LinkedList::LinkedList()

{

head = NULL;

}

struct node *create(string )

{

struct node *t;

t = new(struct node);

if (t == NULL)

{

cout<<"Memory not allocated "<

return 0;

}

else

{

t->data = name;

t->next = NULL;

return t;

}

}

void LinkedList::insert(string)

{

struct node *t, *p;

t = create(name);

if (head == NULL)

{

head = t;

head->next = NULL;

}

else

{

p = head;

head = temp;

head->next = p;

}

}

void LinkedList::remove(string name)

{

struct node *pre = NULL, *del = NULL;

if (_head->data == name) {

del = head;

head = del->next;

delete del;

return;

}

pre = head;

del = head->next;

while (del != NULL) {

if (del->data == name) {

pre->next = del->next;

delete del;

break;

}

pre = del;

del = del->next;

}

}

void LinkedList::print(string name)

{

if ()

{

cout<<"There are no entries in the list to display"<

return;

}

t = head;

while ()

{

if (t->data == name)

{

f = true;

cout<< name << "is in the List "<

}

// t = t->next;

}

// if (!f)

// cout<

// }

void LinkedList::printAll()

{

int count =0;

struct node *t;

if (head == )

{

return;

}

t = head;

while (temp != NULL)

{

count++;

t = t->next;

}

cout<<"Displaying all" <

while ()

{

t = t->next;

}

}

ASSIGNMENT DETAIL

the LinkedList class should use a pointer based LinkedList, that will need a constructor and destructor, for our insertion methods, insert at the beginning of the list. without modifying the LinkedList-main.cpp , fix the the LinkedList.h (header File) and create a LinkedList.cpp (implementation) file.

the driver code produces these following commands

A (admits patient NAME to the beginning of the list)

D (discharges patient NAME if NAME is in the list, silently continues otherwise)

F (prints patient NAME if found in the list)

V (visits all patients and displays their names in list order)

and the input file is

V

F Sophia

D Sophia

A Sophia

V

F Sophia

D Sophia

V

F Sophia

D Sophia

A Jackson

A Emma

A Aiden

A Olivia

A Lucas

V

D Jackson

D Emma

D Aiden

D Olivia

D Lucas

V