sbn.cassigment/tests/bookNode.c

183 lines
3.3 KiB
C
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#include <stdlib.h>
#include <stdio.h>
struct book
{
char *title;
char *author;
char *isbn;
struct book *next;
};
typedef struct book BOOK;
FILE *file;
BOOK *head;
void add_book(char *title, char *author, char *isbn);
void display();
int count();
void save_book_data(struct book *data);
int main()
{
head = NULL;
add_book("My Third Book", "Zero 1", "000-000-111");
add_book("My Fouth Book", "1 Zero", "111-000-000");
add_book("My Fifth Book", "2 Zero", "222-000-000");
int i;
file = fopen("./data/books.txt", "a+");
if (file == NULL)
{
printf("Error: addressbook.dat could not be opened.\n");
return EXIT_FAILURE;
}
// char title[20];
// char author[20];
// char isbn[20];
// while (!feof(file))
// {
// fgets(title, 20, file);
// fgets(author, 20, file);
// fgets(isbn, 20, file);
// // Removes newline characters from the ends of the names
// i = 0;
// while (title[i] != '\n')
// {
// i++;
// }
// title[i] = '\0';
// i = 0;
// while (author[i] != '\n')
// {
// i++;
// }
// author[i] = '\0';
// // Adds the entry from the strings with the file data in them
// add_book(title, author, isbn);
// }
BOOK *temp;
temp = head;
fputs(temp->title, file);
fputs("\n", file);
fputs(temp->author, file);
fputs("\n", file);
fputs(temp->isbn, file);
while (temp->next != NULL)
{
temp = temp->next;
fputs("\n", file);
fputs(temp->title, file);
fputs("\n", file);
fputs(temp->author, file);
fputs("\n", file);
fputs(temp->isbn, file);
}
// close the file
fclose(file);
// save book data
// save_book_data(head);
// display();
int countEntries = count();
printf("There are %d entries\n", countEntries);
return EXIT_SUCCESS;
}
void add_book(char *title, char *author, char *isbn)
{
struct book *temp, *iterator;
temp = (struct book *)malloc(sizeof(struct book));
temp->title = title;
temp->author = author;
temp->isbn = isbn;
// ref
iterator = head;
if (head == NULL)
{
head = temp;
head->next = NULL;
}
else
{
while (iterator->next != NULL)
{
iterator = iterator->next;
}
temp->next = NULL;
iterator->next = temp;
}
}
int count()
{
int n = 1;
BOOK *temp;
temp = head;
if (head == NULL)
{
return 0;
}
while (temp->next != NULL)
{
n++;
temp = temp->next;
}
return n;
}
void save_book_data(struct book *data)
{
file = fopen("./data/books.txt", "a+");
if (file == NULL)
{
printf("Error: addressbook.dat could not be opened.\n");
exit(EXIT_FAILURE);
}
BOOK *temp;
temp = data;
if (temp == NULL)
{
return;
}
fputs(temp->title, file);
fputs(temp->author, file);
fputs(temp->isbn, file);
while (temp->next != NULL)
{
temp = temp->next;
fputs(temp->title, file);
fputs(temp->author, file);
fputs(temp->isbn, file);
}
fflush(file);
fclose(file);
}