I need these 3 questions at the bottom! please help. This is written in C // READ BEFORE YOU START: // Please read the given Word document for the project description with an illustrartive diagram. // You are given a partially completed program that creates a list of books. // Each book has the corresponding information: title, author, price and a linked list of frequently bought books. // Please read the instructions above each required function and follow the directions carefully. // If you modify any of the given code, return types, or parameters, you risk failing test cases. // The following will be accepted as input in the following format: "title:author:price" // Example Input: "ProgrammingLanguages:Chen:45" // Valid title: String containing alphabetical letters beginning with a capital letter // Valid author: String containing alphabetical letters beginning with a capital letter // Valid price: A float variable #include #include #include #include #pragma warning(disable: 4996) // used to create a linked list of containers, each contaning a "book" struct container { struct book *book; struct container *next; } *list = NULL; // used to hold book information and linked list of "frequently bought together (fbt)" struct book { char title[30]; char author[30]; float price; struct fbt *fbts; }; // used to create a linked list of frequently bought together (fbt) struct fbt { struct book *book; struct fbt *next; }; // forward declaration of functions that have already been implemented void flush(); void branching(char); void registration(char); // the following forward declarations are for functions that require implementation // HW07 // Total: 50 points for hw07 // return type // name and parameters // points void add_book(char*, char*,float); // 15 struct book* search_book(char*); // 10 void remove_book(char*); // 15 void print_all_books(); // 10 // HW08 // Total: 50 points for hw08 struct container * buy_book(); // 15 struct container * setfbt(struct container *); // 25 void display_fbt(struct container*); // 10 int main() { char ch = 'i'; printf("Book Information "); do { printf("Please enter your selection: "); printf("\ta: add a new book to the list "); printf("\ts: search for a book on the list "); printf("\tr: remove a book from the list "); printf("\tl: print the list of all books "); printf("\tb: buy a book "); printf("\tq: quit "); ch = tolower(getchar()); flush(); branching(ch); } while (ch != 'q'); return 0; } // consume leftover ' ' characters void flush() { int c; do c = getchar(); while (c != ' ' && c != EOF); } // branch to different tasks void branching(char c) { switch (c) { case 'a': case 's': case 'r': case 'l':registration(c); break; case 'b':{ struct container * buy = buy_book(); buy = setfbt(buy); display_fbt(buy); break; } case 'q': break; default: printf("Invalid input! "); } } // // This function will determine what info is needed and which function to send that info to. // It uses values that are returned from some functions to produce the correct ouput. // There is no implementation needed here, but you should trace the code and know how it works. // It is always helpful to understand how the code works before implementing new features. // Do not change anything in this function or you risk failing the automated test cases. void registration(char c) { if (c == 'a') { char input[100]; printf(" Please enter the book's info in the following format: "); printf("title:author:price "); fgets(input, sizeof(input), stdin); // discard ' ' chars attached to input input[strlen(input) - 1] = '\0'; char* title = strtok(input, ":"); // strtok used to parse string char * author = strtok(NULL, ":"); float price = atof(strtok(NULL, ":")); struct book* result = search_book(title); if (result == NULL) { add_book(title, author, price); printf(" Book added to list successfully "); } else printf(" That book is already on the list "); } else if (c == 's' || c == 'r' ) { char title[30]; printf(" Please enter the book's title: "); fgets(title, sizeof(title), stdin); // discard ' ' chars attached to input title[strlen(title) - 1] = '\0'; struct book* result = search_book(title); if (result == NULL) printf(" That book is not on the list "); else if (c == 's'){ printf(" Title: %s ", result->title); printf("Author: %s ", result->author); printf("Price: %.2f ", result->price); } else { remove_book(title); printf(" Book removed from the list "); } } else { print_all_books(); } } 

// hw08 Q1: buy_book (15) // In this function, you should return the linked list of books that the user wants to buy. // The user should be able to buy as many books as he/she wants until 'n' is pressed. // The user can buy a book using its title. // The book that the user is going to buy should be on the main linked list. struct container * buy_book(){ } // hw08 Q2: setfbt (25) // When a user buys a book, the frequently bought togther(fbt) linked list should be updated for each book. // The update in fbt list should be done for each book in the buying list. // For simplicity, you do not consider the number of times the books are bought. struct container * setfbt (struct container * in){ } // hw08 Q3: display_fbt (10) // This function prints the list of books for a given container. // It should both print the details of each book and the fbt for that book. // This function is used to print the book list in the buy option. void display_fbt(struct container* books) { } 

a: dd a new book to the 113t 3: earch for a book on the 11st r: remove a book trom the 11at 1: print the 11at of all books b: buy a book a: quit Do you want to buy a book? y for YEs and n for NO:y Please enter the book's title: Do you want to buy a book? y for YES and n for NO:y Please enter the book's title: Do you want to buy a book? y for YES and n for NO:y Please enter the book's title: Do you want to buy a book? y for YES and n for NO:n Thanks for your shopping Title: E uthor: F Price: 300.00 Frequently Bought Together Book: Title : Author: D Price: 200.00 Frequently Bought Together Book: Title: A Author: B Price: 100.00 Title: C Author: D Price: 200.00 Frequently Bought Together Book: Title: E Author: F Price: 300.00 Frequently Bought Together Book: Title: A Author: B Price: 100.00 itle: A Author: B Price: 100.00 Frequently Bought Together Book: Title: E Author: F Price: 300.00 Frequently Bought Together Book: itle: C Author: D Price: 200.00 a: dd a new book to the 113t 3: earch for a book on the 11st r: remove a book trom the 11at 1: print the 11at of all books b: buy a book a: quit Do you want to buy a book? y for YEs and n for NO:y Please enter the book's title: Do you want to buy a book? y for YES and n for NO:y Please enter the book's title: Do you want to buy a book? y for YES and n for NO:y Please enter the book's title: Do you want to buy a book? y for YES and n for NO:n Thanks for your shopping Title: E uthor: F Price: 300.00 Frequently Bought Together Book: Title : Author: D Price: 200.00 Frequently Bought Together Book: Title: A Author: B Price: 100.00 Title: C Author: D Price: 200.00 Frequently Bought Together Book: Title: E Author: F Price: 300.00 Frequently Bought Together Book: Title: A Author: B Price: 100.00 itle: A Author: B Price: 100.00 Frequently Bought Together Book: Title: E Author: F Price: 300.00 Frequently Bought Together Book: itle: C Author: D Price: 200.00