I need help with the error messages that I keep getting. I'm thinking that there's only one problem and they one problem caused the other problems. I think the one problem is with ifstream.

Script started on Sun Dec 02 18:27:11 2001
strauss.udel.edu% cat library.h

//header file for library class



#ifndef Library_H

#define Library_H

#include "book.h"

#include "card.h"

#include <fstream>



class Library {

private:

static int num_books;

static int num_cards;

Book *books[100];

Card *cards[100];

void printcards();

void printbooks();

void checkout();

void checkin();

public:

Library(ifstream &input);

~Library();

DoCommand(char);

Findbook(int);

Findcard(int);

static int getnum_books;

static int getnum_cards;

};



#endif

strauss.udel.edu% cat lir brary.cc

//member definition for library class



#include "book.h"

#include "card.h"

#include "library.h"

#include <string>

#include <iostream>



using std :: cout;

using std :: cout;



Library :: Library(ifstream &input) {

input.getline(title, 100, "\0");



for(int i = 0; i < 100; i++) {

books[i] = NULL;

while(strcmp(title, $$$) != 0) {

input.getline(author, 100, "\0");

input >> BookID >> status >> CardID;

input.ignore();

books[i] = new Book(title, author, BookID, status, CardID);

num_books++;

input.getline(title, 100, "\0");

}

}

input.getline(name, 100, "\0");



for(int j = 0; j < 100; j++) {

cards[j] = NULL;

while(!input.eof()) {

input.getline(phone, 100, "\0");

input >> CardID >> BookID;

cards[j] = new Card(name, phone, CardID, BookID);

num_cards++;

input.getline(name, 100, "\0");

}

}

Library :: Findbook(Book b) {

while(b[i] != NULL) {

if(BookID == b.BookID)

return BookID;

else

i++;

}

cout >> "Book not found";

}

Library :: Findcard(Card c) {

while(c[i] != eof()) {

if(CardID == c.CardID)

return CardID;

else

j++;

}

cout >> "Card not found";

}

Library :: DoCommand(char c) {

command = c;



if(command = 'B'){

while(books[i] != NULL) {

cout << "Processing book - ";

b[i]->print() ;

cout << endl;

i++;

}

cout << num_books << "books in the library" << endl;

}else if(command = 'C') {

while(cards[j] != NULL)) {

cout << "Processing card - ";

c[j]->print();

cout << endl;

j++;

}

cout << num_cards << "cards in the library" << endl;

}else if(command = 'O') {

cout << "Enter book ID: ";

cin >> BookID;

Findcard(CardID);

cout << "Enter card ID: ";

cin >> CardID;

Findbook(BookID);



if(getBookID() != 0) {

cout << "Sorry. You can't check out a book until"

<< "you return the book that you checked out"

<< "before." << endl;

}else {

if(getstatus() == 0) {

setstatus(1);

setBookID(BookID);

setCardID(CardID);

}else if(getstatus() == 1) {

cout << "Sorry, but the has already been"

<< "checked out."<< endl;

}else {

cout << "Book is at the bindery."<< endl;

}

}else if(command = 'W') {

cout << "Enter book ID: ";

cin >> BookID;

Findbook(BookID);

cout << "Enter card ID: ";

cin >> CardID;

Findcard(CardID);



if(getBookID() == 0) {

cout << "You do not have any books checked out" << endl;

}else {

if(getstatus() == 1){

setstatus(0);

setBookID(BookID);

}

}

}







strauss.udel.edu% make

CC -c library.cc

"library.h", line 20: Error: ifstream is not defined.

"library.cc", line 12: Error: ifstream is not defined.

"library.cc", line 13: Error: input is not defined.

"library.cc", line 13: Error: title is not defined.

"library.cc", line 13: Error: Badly formed expression.

"library.cc", line 17: Error: title is not defined.

"library.cc", line 17: Error: Expected an expression.

"library.cc", line 18: Error: input is not defined.

"library.cc", line 18: Error: author is not defined.

"library.cc", line 18: Error: Badly formed expression.

"library.cc", line 19: Error: input is not defined.

"library.cc", line 19: Error: BookID is not defined.

"library.cc", line 19: Error: status is not defined.

"library.cc", line 19: Error: CardID is not defined.

"library.cc", line 20: Error: input is not defined.

"library.cc", line 20: Error: Badly formed expression.

"library.cc", line 21: Error: title is not defined.

"library.cc", line 21: Error: author is not defined.

"library.cc", line 21: Error: BookID is not defined.

"library.cc", line 21: Error: status is not defined.

"library.cc", line 21: Error: CardID is not defined.

"library.cc", line 23: Error: input is not defined.

"library.cc", line 23: Error: title is not defined.

"library.cc", line 23: Error: Badly formed expression.

"library.cc", line 26: Error: input is not defined.

Compilation aborted, too many Error messages.

*** Error code 1

make: Fatal error: Command failed for target `library.o'

strauss.udel.edu% exit

strauss.udel.edu%
script done on Sun Dec 02 18:27:30 2001