final

#include <iostream>
#include <string>
#include <fstream>
 
using namespace std;
 
struct temp
{
	string temp;
};
 
struct Book 
{
	string title;
	string author;
};
 
const int ARRAY_SIZE = 1000;
Book books [ARRAY_SIZE];
 
 
// Function prototypes
int loadData(string pathName);  
void showAll(int count);
void showBooksByAuthor (int count);
void showBooksByTitle (int count);
void sortByTitle (int count);
void sortByAuthor (int count);
void swap(int , int );
 
 
int main()
{
	char choice = ' ';
	ifstream inFile;
	int count = 0;
 
	string fileName;
 
 
	cout << "Welcome to Patrick’s Library Database.'/n' Please enter the name of the backup file:" << endl;
	getline(cin, fileName);
	 if ( loadData(fileName) == -1 )
	 {
		 cout << "failed to load from file" << endl;
		 return 0;
	 }
	count = loadData(fileName);
	if(count < 1)
		loadData(fileName);
 
	while(choice != 'q' || choice != 'Q')
	{
	cout << "Enter Q to (Q)uit, Search (A)uthor, Search (T)itle, (S)how All:" << endl;
	cin >> choice;
	if(choice == 'q' || choice == 'Q')
		return 0;
	else if(choice == 'a' || choice == 'A')
		{
		sortByAuthor (count);
		showBooksByAuthor (count);
		}
	else if(choice == 't' || choice == 'T')
		{
		sortByTitle (count);
		showBooksByTitle (count);
		}
	else if(choice == 's' || choice == 'S')
		showAll(count);
	else
		{
			cout << "Invalid request. '/n' Enter Q to (Q)uit, Search (A)uthor, Search (T)itle, (S)how All: " << endl;
			cin >> choice;
		}
	}
 
	inFile.close();
	 //closes both files
 
	return 0;
}
 
int loadData(string pathName)
{
	ifstream inFile;
	int i;
 
 
 
	inFile.open(pathName);
	if(!inFile)
	{ 
 
		return -1;
	}
	else if(inFile)
	{
		for(i = 0; !inFile.eof() && i < ARRAY_SIZE ; i++)
		{
			getline(inFile, books[i].title);
			getline(inFile, books[i].author);
		}
		return i;
	}
	return 0;
 
}
 
void showAll(int count)
{
	for (int i = 0; i < count; i++)
	{
		cout << books[i].title << " by " << books[i].author << endl;
	}
 
}
 
void showBooksByAuthor (int count)
{
	string author;
	cout << "Enter name or partial name of author: " << endl;
	cin >> author;
 
	for(int i = 0; i < count; i++)
	{
		if ( books[i].author.find(author) != -1 )
		{
			cout << books[i].author << " " << books[i].title << endl;
		}
 
	}
 
}
void showBooksByTitle (int count)
{
	string title;
	cout << "Enter name or partial name of title: " << endl;
	cin >> title;
	for(int i = 0; i < count; i++)
	{
		if ( books[i].title.find(title) != -1 )
		{
			cout << books[i].title << " " << books[i].author << endl;
		}
 
	}
}
 
 
void sortByTitle (int count)
{
 int i, j, minIndex ;
 
	for(i = 0; i < count - 1; i++)
	{
		minIndex = i;
		for(j = i + 1; j < count; j++)
		{
			if( books[j].title.compare( books[minIndex].title) < 0)
			minIndex = j;
		}
		swap(i, minIndex);
 
	}
}
 
void sortByAuthor (int count)
{
 int i, j, minIndex ;
 
	for(i = 0; i < count - 1; i++)
	{
		minIndex = i;
		for(j = i + 1; j < count; j++)
		{
			if( books[j].author.compare( books[minIndex].author) < 0)
			minIndex = j;
		}
		swap(i, minIndex);
 
	}
}
 
void swap(int i, int minIndex)
{
 Book temp;
 
 temp.title = books[i].title;
 temp.author = books[i].author;
 books[i].title = books[minIndex].title;
 books[i].author = books[minIndex].author;
 books[minIndex].title = temp.title;
 books[minIndex].author = temp.author;
}