Use the knowledge in computational language in C++ to write the a code with alphabetical order of author name.
An Array is a set of values arranged in lists and accessible through a positive numeric index. So, we have that each position of our Array is a variable of the type of our Array, so we have to have a way to initialize this set of variables.
#include <iostream>
#include <iomanip>
#include <fstream>
#include <string>
using namespace std;
struct Book {
string title;
string author;
};
const int ARRAY_SIZE = 1000;
Book books [ARRAY_SIZE];
string pathname;
ifstream library;
int LoadData();
void ShowAll(int count);
void ShowBooksByAuthor(int count, string name);
void ShowBooksByTitle(int count, string title);
void sortByTitle(int count, string title);
void sortByAuthor(int count, string author);
int main()
{
int count = 0;
char selector = 'q', yesNoAnswer = 'n';
string name;
string title;
cout << "Welcome to Forrest's Library Database." << endl;
cout << "Please enter the name of the backup file: ";
getline(cin, pathname);
LoadData();
count = LoadData();
cout << count << " records loaded successfully." << endl;
do
{
cout << endl << "\t(S)how All, Search (A)uthor, Search (T)itle, (Q)uit: ";
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 << "bookAuthor: ";
cin.ignore();
getline(cin, name);
if (count <= 0)
cout << "No records found!\n";
else
ShowBooksByAuthor(count, name);
break;
case 'T':
sortByTitle(count, title);
cout << "bookTitle: ";
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;
int i = 0;
library.open(pathname);
ifstream library(pathname);
if (!library)
{
cout << "Cannot open backup file" << endl;
return 0;
}
while (!library.eof())
{
getline(library, books[count].title);
getline(library, books[count].author);
count++;
}
return count;
}
void ShowAll(int count)
{
for (int i = 0; i < count; i++)
{
cout << books[i].title << " " << "(" << books[i].author << ")" << endl;
}
}
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 << ")" << endl;
j++;
}
}
cout << j << " records found";}
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 << ")" << endl;
j++;
}
}
cout << j << " records found";
}
void sortByTitle(int count, string title) {
string temp;
for (int i = 0; i < count; i++) {
for(int j = 0; j < count - i; j++) {
if (books[j].title > books[j + 1].title) {
temp = books[j].title;
books[j].title = books[j + 1].title;
books[j + 1].title = temp;
}
}
}
}
void sortByAuthor(int count, string name) {
string temp;
for (int i = 0; i < count; i++) {
for(int j = 0; j < count - i; j++) {
if (books[j].author > books[j + 1].author) {
temp = books[j].author;
books[j].author = books[j + 1].author;
books[j + 1].author = temp;
}
}
}
}
See more about C++ at brainly.com/question/19705654
