Library [Final version]

/* TonyPLab8.cpp
Created by: Tony Pham
Date: 12.01.2019

*/
#include <iostream>
#include <iomanip>
#include <fstream>
#include <string>

using namespace std;

// structure
struct Book {
    string title;
    string author;
};

const int ARRAY_SIZE = 1000;
Book books[ARRAY_SIZE];
string pathName;
bool userInput;

// global variables
int loadData();
void showAll(int count);
void showBooksByAuthor(int count, string author);
void showBooksByTitle(int count, string title);
void sortByTitle(int count, string title);
void sortByAuthor(int count, string author);

int main()
{
    // initialised variables
    int count = 0;
    char selector = 'q';
    string name;
    string title;

    // asks user for file pathname
    cout << "Welcome to Tony's Library Database.\n";
    cout << "Please enter the name of the file: ";
    cin >> pathName;
    count = loadData();
    // catches if count value is less than 0
    while (count < 0) {
        cout << " Do you want to try again(1) or quit(0)? \n";
        cin >> userInput;
        if (userInput == 1) {
            cout << "Please enter the name of the file: ";
            cin >> pathName;
            count = loadData();
        }
        if (userInput == 0)
        {
            cout << " Program will now close! \n";
            return 0;
        }
    }
    cout << count << " Records loaded successfully.\n";
    // Switch case menu
    do {
        cout << endl << "Please enter a keyword that corresponds to the list of options: \n";
        cout << " Search by: (A)uthor, (T)itle, (S)how All, (Q)uit Program: ";
        cin >> selector;
        selector = toupper(selector);
        switch (selector)
        {
        case 'S':
            sortByTitle(count, title);
            if (count <= 0) {
                cout << " No counts found! \n";
            }
            else {
                showAll(count);
            }
            break;
        case 'A':
            sortByAuthor(count, name);
            cout << " Book Author: ";
            cin.ignore();
            getline(cin, name);
            if (count <= 0) {
                cout << " No records found! \n";
            }
            else {
                showBooksByAuthor(count, name);
                break;
            }
        case 'T':
            sortByTitle(count, title);
            cout << " Book Title: ";
            cin.ignore();
            getline(cin, title);
            if (count <= 0) {
                cout << " No records found! \n";
            }
            else {
                showBooksByTitle(count, title);
                break;
            }
        }
    }
    while (selector != 'q' && selector != 'Q');
    return 0;
}

int loadData()
{
    int count = 0;
    ifstream fileLocation;
    fileLocation.open(pathName);
    if (!fileLocation.is_open())
    {
        cout << " Unable to open file path! \n";
        return -1;
    }
    while (!fileLocation.eof()) // Echo starts here
    {
        getline(fileLocation, books[count].title);
        getline(fileLocation, books[count].author);
        count++;
    }
    return count;
}
// displays all book titles beside the author names
void showAll(int count)
{
    for (int i = 0; i < count; i++)
    {
        cout << books[i].title << " " << "(" << books[i].author << ")\n";
    }
}
// displays books based on author name matching user input.
void showBooksByAuthor(int count, string name)
{
    int j = 0;
    for (int i = 0; i < count; i++)
    {
        if (books[i].author.find(name) < 100)
        {
            cout << books[i].title << " " << "(" << books[i].author << ")\n";
            j++;
        }
    }
    cout << j << " records found! \n";
}
// Displays books based on title matching user input.
void showBooksByTitle(int count, string title)
{
    int j = 0;
    for (int i = 0; i < count; i++)
    {
        if (books[i].title.find(title) < 100)
        {
            cout << books[i].title << " " << "(" << books[i].author << ")\n";
            j++;
        }
    }
    cout << j << " records found! \n";
}
// Sorts by book title.
void sortByTitle(int count, string title) {
    Book temp;
    for (int i = 1; i < count; i++) {
        for (int j = 0; j < count - i; j++) {
            if (books[j].title > books[j + 1].title) {
                temp = books[j];
                books[j] = books[j + 1];
                books[j + 1] = temp;
            }
        }
    }
}
// Sorts by book author.
void sortByAuthor(int count, string name) {
    Book temp;
    for (int i = 1; i < count; i++) {
        for (int j = 0; j < count - i; j++) {
            if (books[j].author > books[j + 1].author) {
                temp = books[j];
                books[j] = books[j + 1];
                books[j + 1] = temp;
            }
        }
    }
}