c0d3r
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Код:
#include <ctime>
#include <iostream>
#include <ostream>
#include <string>
#include <stdexcept>
using std::cout;
using std::endl;
using std::ostream;
using std::string;
using std::out_of_range;
using std::invalid_argument;
typedef enum {
BOOK_ARTISTIC, // художественная
BOOK_METHODICAL,// методическая
BOOK_HAND, // справочник
BOOK_OTHER // другое
} BookType;
class Book {
string name;
string author;
BookType type;
size_t year;
// needed for setAge()
size_t curYear;
static const size_t MIN_YEAR = 1900;
static const size_t MAX_YEAR = 2054;
public:
Book(string name_, string author_, size_t year_, BookType type_)
: name(name_), author(author_), type(type_), curYear(0) {
setYear(year_);
/// @todo check return values
const time_t t = time(NULL);
const struct tm *tm = localtime(&t);
curYear = tm->tm_year + 1900;
}
// -------
// getters
// -------
const string &getName() const {
return name;
}
const string &getAuthor() const {
return author;
}
BookType getType() const {
return type;
}
size_t getYear() const {
return year;
}
size_t getAge() const {
return curYear - year;
}
// -------
// setters
// -------
/// @exception std::invalid_argument for empty string
void setName(string name_) {
if (name_.empty()) {
throw invalid_argument("Book's name shouldn't be empty!");
}
name = name_;
}
/// @exception std::invalid_argument for empty string
void setAuthor(string author_) {
if (author_.empty()) {
throw invalid_argument("Author's name shouldn't be empty!");
}
author = author_;
}
void setType(BookType type_) {
type = type_;
}
/// @exception std::out_of_range if date is wrong
void setYear(size_t year_) {
if (year_ < MIN_YEAR) {
throw out_of_range("Wrong date! Should be greater than " + MIN_YEAR);
}
if (year_ > MAX_YEAR) {
throw out_of_range("Wrong date! Should be less than " + MAX_YEAR);
}
year = year_;
}
};
inline ostream &
operator<<(ostream &os, const Book &book) {
os << "Name: " << book.getName() << endl
<< "Author: " << book.getAuthor() << endl
<< "Year: " << book.getYear() << endl
<< "Age: " << book.getAge() << endl;
return os;
}
int main() {
Book cpp_book("The C++ Programming Language", "Bjarne Stroustrup", 2000, BOOK_OTHER);
cout << cpp_book;
return 0;
}
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Всего записей: 132 | Зарегистр. 24-08-2004 | Отправлено: 11:22 23-11-2008 | Исправлено: c0d3r, 11:33 23-11-2008 |
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