vect2.cpp

// vect2.cpp -- moethods and iterators
#include <iostream>
#include <string>
#include <vector>

struct Review {
	std::string title;
	int rating;
};
bool FillReview (Review & rr);
void ShowReview (const Review & rr);
int main()
{
	using std::cout;
	using std::vector;
	vector<Review> books;
	Review temp;
	while (FillReview(temp)) {
		books.push_back(temp);
	}
	int num = books.size();
	if (num > 0) {
		cout << "Thank you, You entered the following:\n"
			<< "Rating\tBook\n";
		for (int i = 0; i < num; i++) {
			ShowReview(books[i]);
		}
		cout << "Reprising:\n"
			<< "Rating\tBook\n";
		vector<Review>::iterator pr;
		for (pr = books.begin(); pr != books.end(); pr++) {
			ShowReview(*pr);
		}
		vector <Review> oldlist(books);
		if (num > 3) {
			books.erase(books.begin() + 1, books.begin() + 3);
			cout << "After erasure:\n";
			for (pr = books.begin(); pr != books.end(); pr++) {
				ShowReview(*pr);
			}
			books.insert(books.begin(), oldlist.begin() + 1,
					oldlist.begin() + 2);
			cout << "After insertion:\n";
			for (pr = books.begin(); pr != books.end(); pr++) {
				ShowReview(*pr);
			}
		}
		books.swap(oldlist);
		cout << "Swapping oldlist with books:\n";
		for (pr = books.begin(); pr != books.end(); pr++) {
			ShowReview(*pr);
		}
	} else {
		cout << "Nothing entered, nothing gained.\n";
	}

	return 0;
}

bool FillReview(Review & rr)
{
	std::cout << "Enter book title (quit to quit): ";
	std::getline(std::cin, rr.title);
	if (rr.title == "quit") {
		return false;
	}
	std::cout << "Enter book rating: ";
	std::cin >> rr.rating;
	if (!std::cin) {
		return false;
	}
	std::cin.get();

	return true;
}

void ShowReview(const Review & rr)
{
	std::cout << rr.rating << "\t" << rr.title << std::endl;
}