Each command requires separate function Program creating book-store database. Ea

Question

Each command requires separate function

Program creating book-store database. Each command requires separate function. struct Book string ISBN; string title; int quantity, int edition; double pricc; Program needs to read and process a transaction file “storeTrans.txt". This file contains several commands such as: display, add, scarchBook, delcte, updatePrice, updateQuantity, sort and save. Each command requires new linc Example of display: ISBN Title Edition Quantity Price 123456789 C++ForDummies 3 5 150.00 Add bookISBN bookTitle bookQuantity bookPricc . .Adds new book record to the databasc Should read information from the transaction file If book docsn't exist: add new entry Should display message that the book was successfully added . Should check for duplicate book entries (same ISBN) use push back function to add to the end of vector “123456789 successfully added to the database " If book alrcady exists, do not add. Display message . “123456789 already exists. The number ofcopies is now 5…” · .ScarchBook bookTitle . Scarches and returms all books with matching title. Exact title OR kcyword found Display message ."Scarching for book 123456789 C++ForDummics 5" .If no cntry found "Scarching for book Sorry, no matching book exists" . -

Explanation / Answer

#include<iostream>
#include<fstream>
#include<string>
#include<vector>

using namespace std;

struct Book {
   string ISBN;
   string title;
   int quantity;
   int edition;
   double price;
};

void swap(struct Book &x, struct Book &y){
     struct Book temp;
     temp.ISBN = x.ISBN;
     temp.title = x.title;
     temp.quantity = x.quantity;
     temp.edition = x.edition;
     temp.price = x.price;
    
     x.ISBN = y.ISBN;
     x.title = y.title;
     x.quantity = y.quantity;
     x.edition = y.edition;
     x.price = y.price;

     y.ISBN = temp.ISBN;
     y.title = temp.title;
     y.quantity = temp.quantity;
     y.edition = temp.edition;
     y.price = temp.price;

}

void AddBook(vector<Book> &data, Book item){
     int found;
     int quantity;
     found = 0;
     for(int i = 0; i<data.size(); i++){
         if (data[i].ISBN == item.ISBN){
            found = 1;
            quantity = data[i].quantity;
         }
     }
     if (found == 0){
        data.push_back(item);
        cout << item.ISBN << " successfully added to the database" << endl;
     }  
     else {
        cout << item.ISBN << " already exists. The number of copies is " << quantity << endl;
     }
}

void SearchBook(vector<Book> &data,string title){

    int found = 0;
   
    for(int i = 0; i<data.size(); i++){
      
       if (data[i].title == title){
          found = 1;
          cout << data[i].ISBN << " "<< title << endl;
       }
    }
    if (found == 0)
       cout << title << " book does not exist " << endl;
}

void DeleteBook(vector<Book> &data,string isbn){
    int found = 0;
    for(int i = 0; i<data.size(); i++){
        if (data[i].ISBN == isbn){
           found = 1;
           data.erase(data.begin()+i);
        }
    }
    if (found == 1)
       cout << isbn << " book successfully deleted "<< endl;
    else
       cout << isbn << " book does not exist " << endl;
}

void UpdatePrice(vector<Book> &data, string isbn, double price){
     int found = 0;
     for(int i = 0; i<data.size(); i++){
        if (data[i].ISBN == isbn){
           found = 1;
           data[i].price = price;
        }
     }
     if (found == 1)
        cout << isbn << " book price updated to " << price << endl;
     else
        cout << isbn << " book does not exist " << endl;
}

void UpdateQuantity(vector<Book> &data, string isbn, int quantity){
     int found = 0;
     for(int i = 0; i<data.size(); i++){
        if (data[i].ISBN == isbn){
           found = 1;
           data[i].quantity = quantity;
        }
     }
     if (found == 1)
        cout << isbn << " book quantity updated to " << quantity << endl;
     else
        cout << isbn << " book does not exist " << endl;
}

void Sort(vector<Book> &data){

    for(int i = 0; i<data.size(); i++){
       for(int j = i; j<data.size(); j++){
          if (data[i].title > data[j].title){
             swap(data[i],data[j]);
          }
                  
          if (data[i].title == data[j].title){
             if (data[i].edition > data[j].edition)
                swap(data[i],data[j]);
          }
      }
    }
    cout << "Database Sorted.." << endl;

}

void Save(vector<Book> &data){
     ofstream fout("storeOut.txt");
     for(int i = 0; i<data.size(); i++){
        fout << data[i].ISBN << " " << data[i].title << " " << data[i].edition;
        fout << " " << data[i].quantity << " " << data[i].price << endl;
     }
     fout.close();

}

int main(){

   vector<Book> data;
   ifstream fin;
   string input;
   string isbn;
   int quantity;
   int edition;
   int found;
  
   double price;
   string title;
   struct Book item;
  
   fin.open("storeTrans.txt");
   if (fin){
      while(fin >> input ){
          if (input == "AddBook"){
             fin >> item.ISBN >> item.title >> item.quantity >> item.price >> item.edition;
             AddBook(data,item);
          }
          if (input == "SearchBook"){
             fin >> title;
             SearchBook(data,title);
          }
          if (input == "DeleteBook"){
             fin >> isbn;
             DeleteBook(data,isbn);
          }
          if (input == "UpdatePrice"){
             fin >> isbn >> price;
             UpdatePrice(data,isbn,price);
          }
          if (input == "UpdateQuantity"){
             fin >> isbn >> quantity;
             UpdateQuantity(data,isbn,quantity);

          }
          if (input == "Sort"){
             Sort(data);

          }
          if (input == "Save"){
             Save(data);
          }

      }
   }
   else {
       cout << "Error opening file ";
   }     

   return 0;
}

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