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#include <cstdlib>
#include <iostream>
#include <iomanip>
#include <fstream>
#include <string>
#include <sstream>
#include <algorithm>
#include <cctype>
using namespace std;
struct library{
string title;
string author;
string publisher;
int isbn;
};
const int MAX_SIZE = 50;
void enter(library book[], int & size);
void display(const library book[], int size);
void save(const library book[], int size);
void read(library book[], int& size);
bool compareByName(library const &a,library const &b);
void organize (library book[], int size);
int main(int argc, char *argv[]){
int size = 0;
library book[MAX_SIZE];
int numOfRecs = 0;
bool run = true;
char option;
do{
cout << "(e)nter item, (d)isplay, (s)ave, (r)ead, (o)rganize, (q)uit" << endl;
cin >> option;
switch(option){
case 'e'|'E': enter(book, size); break;
case 'd'|'D': display(book, size); break;
case 's'|'S': save(book, size); break;
case 'r'|'R': read(book, size); break;
case 'o'|'O': organize(book, size); break;
case 'q'|'Q': run = false; break;
default : cout << "That was not an option." << endl; break;
}
}while(run);
}
void enter(library book[], int & size){
library tmp;
cout << "title: ";
cin.ignore(256, '\n');
getline(cin, tmp.title);
cout << "author: ";
getline(cin, tmp.author);
cout << "publisher: ";
getline(cin, tmp.publisher);
cout << "ISBN: ";
cin >> tmp.isbn;
cout << endl;
book[size++] = tmp;
}
void display(const library book[], int size)
{
if(size < 1) {
cout << "No books recorded" << endl;
} else {
cout << "List of books" << endl << endl;
cout << fixed << setprecision(2);
cout << left;
for (int i = 0; i < size; i++) {
cout <<"Title: "<< book[i].title << endl;
cout <<"Author: "<< book[i].author << endl;
cout <<"Publisher: " <<book[i].publisher<< endl;
cout <<"ISBN: "<< book[i].isbn << endl << endl;
}
}
}
void save(const library book[], int size) {
ofstream outfi("books.dat");
if (!outfi.fail()) {
cout << "Saving books ";
for(int i = 0; i < size; i++) {
outfi << book[i].title << '\n'
<< book[i].author << '\n'
<< book[i].publisher << '\n'
<< book[i].isbn;
// Start a new line after all but the last record
// Simplifies reading the file as EOF is at end of last line
if (i < size-1) outfi << endl;
}
cout << endl << size << "Books saved" << endl;
outfi.close();
}
else {
cout << "Error" << endl;
}
}
void read(library book[], int& size)
{
ifstream infi("Inventory.txt");
string str;
stringstream strstrm;
if (!infi.fail()) {
cout << "Reading disk ";
size = 0;
while(!infi.eof() && size < MAX_SIZE) {
getline(infi, str, '\n');
book[size].title = str;
getline(infi, str, '\n');
strstrm.str(""); strstrm.clear();
strstrm << str;
strstrm >> book[size].author;
getline(infi, str, '\n');
strstrm.str(""); strstrm.clear();
strstrm << str;
strstrm >> book[size].publisher;
getline(infi, str);
strstrm.str(""); strstrm.clear(); // empty and clear the stringstream
strstrm << str;
strstrm >> book[size++].isbn;
}
cout << endl << size << " Books retrieved." << endl;
}
else { // something went wrong with opening the file
cout << "ERROR" << endl;
}
}
bool compareByName(library const &a, library const &b){
return a.title > b.title;
}
void organize(library book[], int size){
if (size > 1){
std::sort(book, book + MAX_SIZE, compareByName);
cout << "Program has sorted the records by Author's first name" << endl << endl;
} // end of if
else cout << "Need at least two names to sort!" << endl << endl;
}
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