#include <iostream>
using namespace std;


struct book
{
	string ISBN;
	int QOH;
	float price;
};
// A struct used to hold a name
struct name
{
	string lastName;
	string firstName;
};

// A struct that contains another struct and an array

struct student
{
	string CLID;
	name studentName;
	int scores[3];
} newStu;
const int MAX = 2;

void loadBooks(book bookList[]);
void findaBook(book bookList[]);
void howManyAreThere(book bookList[]);

int main()
{	
	// book struct demonstration
	//
	book bookList[MAX];		// Make an array of book structs
	
	loadBooks(bookList);         	// Load data into it
	findaBook(bookList);         	// Print out a book
	howManyAreThere(bookList);   	// Add up the QOHs
	
	// student struct demonatration
	cout << "Input CLID: "; 	cin >> newStu.CLID;
	cout << "Input last name: "; 	cin >> newStu.studentName.lastName;
	cout << "Input first name: "; 	cin >> newStu.studentName.firstName;
	
	for(int i = 0; i < 3; i++)
	{
	   cout << "Input score " << i+1 << ": ";
	   cin >> newStu.scores[i];
	}
	
	float avg;
	
	avg = (newStu.scores[0] + newStu.scores[1] + newStu.scores[2]) / 3.0;
	cout << newStu.studentName.firstName << "'s average is: " << avg << endl;
	
	return 0;
}
void loadBooks(book bookList[])
{
	for(int i = 0; i < MAX; i++)
	{
		cout << "Enter an ISBN, QOH, and price ";
		cin  >> bookList[i].ISBN
		     >> bookList[i].QOH
		     >> bookList[i].price;
	}
}
void findaBook(book bookList[])
{
	int bookNum;
	cout 	<< "Enter a book number (1 thru " << MAX << "):";
	cin 	>> bookNum;
        bookNum--;
	cout 	<< bookList[bookNum].ISBN << " "
		<< bookList[bookNum].QOH << " "
		<< bookList[bookNum].price << endl;
}

void howManyAreThere(book bookList[])
{
	int total = 0;
	for(int j = 0; j < MAX; j++)
		total += bookList[j].QOH;
	cout << "There are a total of " << total << " books in the list." << endl;
}