C++ Tutorial/Operator Overloading/overload ostream istream operator

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/vendor/mediawiki/at-ease/src/Functions.php on line 48

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/includes/exception/MWExceptionHandler.php on line 179

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/vendor/mediawiki/at-ease/src/Functions.php on line 48

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/includes/exception/MWExceptionHandler.php on line 179

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/vendor/mediawiki/at-ease/src/Functions.php on line 48

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/includes/exception/MWExceptionHandler.php on line 179

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/vendor/mediawiki/at-ease/src/Functions.php on line 48

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/includes/exception/MWExceptionHandler.php on line 179

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/vendor/mediawiki/at-ease/src/Functions.php on line 48

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/includes/exception/MWExceptionHandler.php on line 179

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/vendor/mediawiki/at-ease/src/Functions.php on line 48

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/includes/exception/MWExceptionHandler.php on line 179

Deprecated: Return type of MediaWiki\Session\PHPSessionHandler::open($save_path, $session_name) should either be compatible with SessionHandlerInterface::open(string $path, string $name): bool, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /var/www/cppe.ru/www/includes/session/PHPSessionHandler.php on line 199

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/includes/exception/MWExceptionHandler.php on line 179

Deprecated: Return type of MediaWiki\Session\PHPSessionHandler::close() should either be compatible with SessionHandlerInterface::close(): bool, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /var/www/cppe.ru/www/includes/session/PHPSessionHandler.php on line 214

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/includes/exception/MWExceptionHandler.php on line 179

Deprecated: Return type of MediaWiki\Session\PHPSessionHandler::read($id) should either be compatible with SessionHandlerInterface::read(string $id): string|false, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /var/www/cppe.ru/www/includes/session/PHPSessionHandler.php on line 228

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/includes/exception/MWExceptionHandler.php on line 179

Deprecated: Return type of MediaWiki\Session\PHPSessionHandler::write($id, $dataStr) should either be compatible with SessionHandlerInterface::write(string $id, string $data): bool, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /var/www/cppe.ru/www/includes/session/PHPSessionHandler.php on line 256

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/includes/exception/MWExceptionHandler.php on line 179

Deprecated: Return type of MediaWiki\Session\PHPSessionHandler::destroy($id) should either be compatible with SessionHandlerInterface::destroy(string $id): bool, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /var/www/cppe.ru/www/includes/session/PHPSessionHandler.php on line 362

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/includes/exception/MWExceptionHandler.php on line 179

Deprecated: Return type of MediaWiki\Session\PHPSessionHandler::gc($maxlifetime) should either be compatible with SessionHandlerInterface::gc(int $max_lifetime): int|false, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /var/www/cppe.ru/www/includes/session/PHPSessionHandler.php on line 383

Warning: ini_set(): Session ini settings cannot be changed after headers have already been sent in /var/www/cppe.ru/www/includes/session/PHPSessionHandler.php on line 126

Warning: ini_set(): Session ini settings cannot be changed after headers have already been sent in /var/www/cppe.ru/www/includes/session/PHPSessionHandler.php on line 127

Warning: session_cache_limiter(): Session cache limiter cannot be changed after headers have already been sent in /var/www/cppe.ru/www/includes/session/PHPSessionHandler.php on line 133

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/includes/exception/MWExceptionHandler.php on line 179

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/vendor/mediawiki/at-ease/src/Functions.php on line 48

Warning: session_set_save_handler(): Session save handler cannot be changed after headers have already been sent in /var/www/cppe.ru/www/includes/session/PHPSessionHandler.php on line 140

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/includes/exception/MWExceptionHandler.php on line 179

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/vendor/mediawiki/at-ease/src/Functions.php on line 48

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/includes/exception/MWExceptionHandler.php on line 179

Deprecated: Return type of Wikimedia\Rdbms\IResultWrapper::current() should either be compatible with Iterator::current(): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /var/www/cppe.ru/www/includes/libs/rdbms/database/resultwrapper/IResultWrapper.php on line 70

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/includes/exception/MWExceptionHandler.php on line 179

Deprecated: Return type of Wikimedia\Rdbms\IResultWrapper::next() should either be compatible with Iterator::next(): void, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /var/www/cppe.ru/www/includes/libs/rdbms/database/resultwrapper/IResultWrapper.php on line 80

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/includes/exception/MWExceptionHandler.php on line 179

Deprecated: Return type of Wikimedia\Rdbms\IResultWrapper::key() should either be compatible with Iterator::key(): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /var/www/cppe.ru/www/includes/libs/rdbms/database/resultwrapper/IResultWrapper.php on line 75

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/includes/exception/MWExceptionHandler.php on line 179

Deprecated: Return type of Wikimedia\Rdbms\ResultWrapper::valid() should either be compatible with Iterator::valid(): bool, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /var/www/cppe.ru/www/includes/libs/rdbms/database/resultwrapper/ResultWrapper.php on line 117

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/includes/exception/MWExceptionHandler.php on line 179

Deprecated: Return type of Wikimedia\Rdbms\ResultWrapper::rewind() should either be compatible with Iterator::rewind(): void, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /var/www/cppe.ru/www/includes/libs/rdbms/database/resultwrapper/ResultWrapper.php on line 90

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/includes/exception/MWExceptionHandler.php on line 179

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/vendor/mediawiki/at-ease/src/Functions.php on line 48

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/includes/exception/MWExceptionHandler.php on line 179

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/vendor/mediawiki/at-ease/src/Functions.php on line 48

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/includes/exception/MWExceptionHandler.php on line 179

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/vendor/mediawiki/at-ease/src/Functions.php on line 48

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/includes/exception/MWExceptionHandler.php on line 179

Deprecated: Return type of MediaWiki\Session\Session::count() should either be compatible with Countable::count(): int, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /var/www/cppe.ru/www/includes/session/Session.php on line 624

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/includes/exception/MWExceptionHandler.php on line 179

Deprecated: Return type of MediaWiki\Session\Session::current() should either be compatible with Iterator::current(): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /var/www/cppe.ru/www/includes/session/Session.php on line 629

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/includes/exception/MWExceptionHandler.php on line 179

Deprecated: Return type of MediaWiki\Session\Session::next() should either be compatible with Iterator::next(): void, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /var/www/cppe.ru/www/includes/session/Session.php on line 639

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/includes/exception/MWExceptionHandler.php on line 179

Deprecated: Return type of MediaWiki\Session\Session::key() should either be compatible with Iterator::key(): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /var/www/cppe.ru/www/includes/session/Session.php on line 634

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/includes/exception/MWExceptionHandler.php on line 179

Deprecated: Return type of MediaWiki\Session\Session::valid() should either be compatible with Iterator::valid(): bool, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /var/www/cppe.ru/www/includes/session/Session.php on line 649

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/includes/exception/MWExceptionHandler.php on line 179

Deprecated: Return type of MediaWiki\Session\Session::rewind() should either be compatible with Iterator::rewind(): void, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /var/www/cppe.ru/www/includes/session/Session.php on line 644

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/includes/exception/MWExceptionHandler.php on line 179

Deprecated: Return type of MediaWiki\Session\Session::offsetExists($offset) should either be compatible with ArrayAccess::offsetExists(mixed $offset): bool, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /var/www/cppe.ru/www/includes/session/Session.php on line 659

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/includes/exception/MWExceptionHandler.php on line 179

Deprecated: Return type of & MediaWiki\Session\Session::offsetGet($offset) should either be compatible with ArrayAccess::offsetGet(mixed $offset): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /var/www/cppe.ru/www/includes/session/Session.php on line 672

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/includes/exception/MWExceptionHandler.php on line 179

Deprecated: Return type of MediaWiki\Session\Session::offsetSet($offset, $value) should either be compatible with ArrayAccess::offsetSet(mixed $offset, mixed $value): void, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /var/www/cppe.ru/www/includes/session/Session.php on line 681

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/includes/exception/MWExceptionHandler.php on line 179

Deprecated: Return type of MediaWiki\Session\Session::offsetUnset($offset) should either be compatible with ArrayAccess::offsetUnset(mixed $offset): void, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /var/www/cppe.ru/www/includes/session/Session.php on line 685

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/includes/exception/MWExceptionHandler.php on line 179

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/vendor/mediawiki/at-ease/src/Functions.php on line 48

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/includes/exception/MWExceptionHandler.php on line 179

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/vendor/mediawiki/at-ease/src/Functions.php on line 48

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/includes/exception/MWExceptionHandler.php on line 179

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/vendor/mediawiki/at-ease/src/Functions.php on line 48

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/includes/exception/MWExceptionHandler.php on line 179

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/vendor/mediawiki/at-ease/src/Functions.php on line 48

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/includes/exception/MWExceptionHandler.php on line 179

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/vendor/mediawiki/at-ease/src/Functions.php on line 48

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/includes/exception/MWExceptionHandler.php on line 179

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/vendor/mediawiki/at-ease/src/Functions.php on line 48

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/includes/exception/MWExceptionHandler.php on line 179

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/vendor/mediawiki/at-ease/src/Functions.php on line 48

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/includes/exception/MWExceptionHandler.php on line 179

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/vendor/mediawiki/at-ease/src/Functions.php on line 48

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/includes/exception/MWExceptionHandler.php on line 179

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/vendor/mediawiki/at-ease/src/Functions.php on line 48

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/includes/exception/MWExceptionHandler.php on line 179

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/vendor/mediawiki/at-ease/src/Functions.php on line 48

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/includes/exception/MWExceptionHandler.php on line 179

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/vendor/mediawiki/at-ease/src/Functions.php on line 48

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/includes/exception/MWExceptionHandler.php on line 179

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/vendor/mediawiki/at-ease/src/Functions.php on line 48

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/includes/exception/MWExceptionHandler.php on line 179

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/vendor/mediawiki/at-ease/src/Functions.php on line 48

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/includes/exception/MWExceptionHandler.php on line 179

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/vendor/mediawiki/at-ease/src/Functions.php on line 48

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/includes/exception/MWExceptionHandler.php on line 179

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/vendor/mediawiki/at-ease/src/Functions.php on line 48

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/includes/exception/MWExceptionHandler.php on line 179

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/vendor/mediawiki/at-ease/src/Functions.php on line 48

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/includes/exception/MWExceptionHandler.php on line 179

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/vendor/mediawiki/at-ease/src/Functions.php on line 48

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/includes/exception/MWExceptionHandler.php on line 179

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/vendor/mediawiki/at-ease/src/Functions.php on line 48

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/includes/exception/MWExceptionHandler.php on line 179

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/vendor/mediawiki/at-ease/src/Functions.php on line 48

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/includes/exception/MWExceptionHandler.php on line 179

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/vendor/mediawiki/at-ease/src/Functions.php on line 48

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/includes/exception/MWExceptionHandler.php on line 179

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/vendor/mediawiki/at-ease/src/Functions.php on line 48

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/includes/exception/MWExceptionHandler.php on line 179

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/vendor/mediawiki/at-ease/src/Functions.php on line 48

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/includes/exception/MWExceptionHandler.php on line 179

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/vendor/mediawiki/at-ease/src/Functions.php on line 48

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/includes/exception/MWExceptionHandler.php on line 179

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/vendor/mediawiki/at-ease/src/Functions.php on line 48

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/includes/exception/MWExceptionHandler.php on line 179

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/vendor/mediawiki/at-ease/src/Functions.php on line 48

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/includes/exception/MWExceptionHandler.php on line 179

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/vendor/mediawiki/at-ease/src/Functions.php on line 48

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/includes/exception/MWExceptionHandler.php on line 179

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/vendor/mediawiki/at-ease/src/Functions.php on line 48

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/includes/exception/MWExceptionHandler.php on line 179

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/vendor/mediawiki/at-ease/src/Functions.php on line 48

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/includes/exception/MWExceptionHandler.php on line 179

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/vendor/mediawiki/at-ease/src/Functions.php on line 48

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/includes/exception/MWExceptionHandler.php on line 179

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/vendor/mediawiki/at-ease/src/Functions.php on line 48

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/includes/exception/MWExceptionHandler.php on line 179

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/vendor/mediawiki/at-ease/src/Functions.php on line 48

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/includes/exception/MWExceptionHandler.php on line 179

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/vendor/mediawiki/at-ease/src/Functions.php on line 48

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/includes/exception/MWExceptionHandler.php on line 179

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/vendor/mediawiki/at-ease/src/Functions.php on line 48

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/includes/exception/MWExceptionHandler.php on line 179

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/vendor/mediawiki/at-ease/src/Functions.php on line 48

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/includes/exception/MWExceptionHandler.php on line 179

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/vendor/mediawiki/at-ease/src/Functions.php on line 48

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/includes/exception/MWExceptionHandler.php on line 179

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/vendor/mediawiki/at-ease/src/Functions.php on line 48

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/includes/exception/MWExceptionHandler.php on line 179

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/vendor/mediawiki/at-ease/src/Functions.php on line 48

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/includes/exception/MWExceptionHandler.php on line 179

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/vendor/mediawiki/at-ease/src/Functions.php on line 48

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/includes/exception/MWExceptionHandler.php on line 179

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/vendor/mediawiki/at-ease/src/Functions.php on line 48

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/includes/exception/MWExceptionHandler.php on line 179

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/vendor/mediawiki/at-ease/src/Functions.php on line 48

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/includes/exception/MWExceptionHandler.php on line 179

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/vendor/mediawiki/at-ease/src/Functions.php on line 48

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/includes/exception/MWExceptionHandler.php on line 179

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/vendor/mediawiki/at-ease/src/Functions.php on line 48

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/includes/exception/MWExceptionHandler.php on line 179

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/vendor/mediawiki/at-ease/src/Functions.php on line 48

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/includes/exception/MWExceptionHandler.php on line 179

Deprecated: Message implements the Serializable interface, which is deprecated. Implement __serialize() and __unserialize() instead (or in addition, if support for old PHP versions is necessary) in /var/www/cppe.ru/www/includes/Message.php on line 159

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/includes/exception/MWExceptionHandler.php on line 179

Deprecated: RawMessage implements the Serializable interface, which is deprecated. Implement __serialize() and __unserialize() instead (or in addition, if support for old PHP versions is necessary) in /var/www/cppe.ru/www/includes/RawMessage.php on line 34

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/includes/exception/MWExceptionHandler.php on line 179

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/vendor/mediawiki/at-ease/src/Functions.php on line 48

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/includes/exception/MWExceptionHandler.php on line 179

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/vendor/mediawiki/at-ease/src/Functions.php on line 48

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/includes/exception/MWExceptionHandler.php on line 179

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/vendor/mediawiki/at-ease/src/Functions.php on line 48

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/includes/exception/MWExceptionHandler.php on line 179

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/vendor/mediawiki/at-ease/src/Functions.php on line 48

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/includes/exception/MWExceptionHandler.php on line 179

Deprecated: Creation of dynamic property RequestContext::$recursion is deprecated in /var/www/cppe.ru/www/includes/context/RequestContext.php on line 354

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/includes/exception/MWExceptionHandler.php on line 179

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/vendor/mediawiki/at-ease/src/Functions.php on line 48

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/includes/exception/MWExceptionHandler.php on line 179

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/vendor/mediawiki/at-ease/src/Functions.php on line 48

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/includes/exception/MWExceptionHandler.php on line 179

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/vendor/mediawiki/at-ease/src/Functions.php on line 48

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/includes/exception/MWExceptionHandler.php on line 179

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/vendor/mediawiki/at-ease/src/Functions.php on line 48

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/includes/exception/MWExceptionHandler.php on line 179

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/vendor/mediawiki/at-ease/src/Functions.php on line 48

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/includes/exception/MWExceptionHandler.php on line 179

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/vendor/mediawiki/at-ease/src/Functions.php on line 48

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/includes/exception/MWExceptionHandler.php on line 179

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/vendor/mediawiki/at-ease/src/Functions.php on line 48

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/includes/exception/MWExceptionHandler.php on line 179

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/vendor/mediawiki/at-ease/src/Functions.php on line 48

Deprecated: Constant E_STRICT is deprecated in /var/www/cppe.ru/www/includes/exception/MWExceptionHandler.php on line 179

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http://cppe.ru/index.php?action=history&feed=atom&title=C%2B%2B_Tutorial%2FOperator_Overloading%2Foverload_ostream_istream_operator C++ Tutorial/Operator Overloading/overload ostream istream operator - История изменений 2026-11-08T14:41:50Z История изменений этой страницы в вики MediaWiki 1.30.0
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http://cppe.ru/index.php?title=C%2B%2B_Tutorial/Operator_Overloading/overload_ostream_istream_operator&diff=2843&oldid=prev в 14:21, 25 мая 2010 2010-05-25T14:21:17Z

<table class="diff diff-contentalign-left" data-mw="interface"> <tr style="vertical-align: top;" lang="ru"> <td colspan="1" style="background-color: white; color:black; text-align: center;">← Предыдущая</td> <td colspan="1" style="background-color: white; color:black; text-align: center;">Версия 14:21, 25 мая 2010</td> </tr><tr><td colspan="2" style="text-align: center;" lang="ru"><div class="mw-diff-empty">(нет различий)</div> </td></tr></table>

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http://cppe.ru/index.php?title=C%2B%2B_Tutorial/Operator_Overloading/overload_ostream_istream_operator&diff=2844&oldid=prev Admin: 1 версия: Импорт контента... 2010-05-25T10:30:39Z

1 версия: Импорт контента... Новая страница<div>==Class level ostream operator and istream operator== <source lang="cpp">#include<iostream.h> #include<fstream.h> class ThreeD { int x,y,z; public: ThreeD(int i,int j,int k){ x=i; y=j; z=k; } friend ostream& operator<<(ostream& stream,ThreeD ob); friend istream& operator>>(istream& stream,ThreeD ob); }; ostream& operator<<(ostream& stream,ThreeD ob) { stream<<ob.x<<" "<<ob.y<<" "<<ob.z<<"\n"; return stream; } istream& operator>>(istream& stream,ThreeD ob) { stream>>ob.x>>ob.y>>ob.z; return stream; } main() { ThreeD o1(1,2,3),o2(4,5,6); ofstream out("test"); if(!out) { cout<<"Cannot open output file\n"; return 1; } cout<<o1<<o2; out.close(); ifstream in("test"); if(!in) { cout<<"Cannot open input file\n"; return 1; } ThreeD o3(0,0,0),o4(0,0,0); in>>o3>>o4; return 0; }</source> <pre class=codeResult>1 2 3 4 5 6</pre> ==Class ostream operator== <source lang="cpp">#include <iostream> #include <cstring> using namespace std; class MyClass { public: char name[80]; int areacode; int prefix; int num; MyClass(char *n, int a, int p, int nm) { strcpy(name, n); areacode = a; prefix = p; num = nm; } }; ostream &operator<<(ostream &stream, MyClass o) { stream << o.name << " "; stream << "(" << o.areacode << ") "; stream << o.prefix << "-" << o.num << "\n"; return stream; } int main() { MyClass a("T", 1, 5, 1); MyClass b("A", 3, 5, 5); MyClass c("T", 2, 5, 9); cout << a < return 0; }</source> <pre class=codeResult>T (1) 5-1 A (3) 5-5 T (2) 5-9</pre> ==Complex logic in ostream operator== <source lang="cpp">#include <iostream> using namespace std; class Line { int x; public: Line(int i) { x=i; } friend ostream &operator<<(ostream &stream, Line o); }; ostream &operator<<(ostream &stream, Line o) { register int i, j; for(i=0; i<o.x; i++) stream << "*"; stream << "\n"; return stream; } int main() { Line a(14), b(30), c(40); cout << a < return 0; }</source> <pre class=codeResult>************** ****************************** ****************************************</pre> ==friend ostream operator for private fields== <source lang="cpp">#include <iostream> #include <cstring> using namespace std; class MyClass { // now private char name[80]; int areacode; int prefix; int num; public: MyClass(char *n, int a, int p, int nm) { strcpy(name, n); areacode = a; prefix = p; num = nm; } friend ostream &operator<<(ostream &stream, MyClass o); }; ostream &operator<<(ostream &stream, MyClass o) { stream << o.name << " "; stream << "(" << o.areacode << ") "; stream << o.prefix << "-" << o.num << "\n"; return stream; } int main() { MyClass a("T", 1, 5, 1); MyClass b("A", 3, 5, 5); MyClass c("T", 2, 5, 9); cout << a < return 0; }</source> <pre class=codeResult>T (1) 5-1 A (3) 5-5 T (2) 5-9</pre> ==Ignore: manipulator that ignores N lines== <source lang="cpp">/* The following code example is taken from the book * "The C++ Standard Library - A Tutorial and Reference" * by Nicolai M. Josuttis, Addison-Wesley, 1999 * * (C) Copyright Nicolai M. Josuttis 1999. * Permission to copy, use, modify, sell and distribute this software * is granted provided this copyright notice appears in all copies. * This software is provided "as is" without express or implied * warranty, and with no claim as to its suitability for any purpose. */ #include <iostream> #include <limits> // Ignore: manipulator that ignores N lines class Ignore { public: int num; Ignore(int n) : num(n) { } }; // convenience function Ignore ignore(int n) { return Ignore(n); } std::istream& operator >> (std::istream& strm, const Ignore& manip) { for (int i=0; i<manip.num; ++i) { strm.ignore(std::numeric_limits<int>::max(),"\n"); } return strm; } int main() { char c; std::cout << "ignore two lines and print frist character following them\n"; std::cin >> ignore(2) >> c; std::cout << "c: " << c << std::endl; }</source> <pre class=codeResult>ignore two lines and print frist character following them a v a c: a</pre> ==istream operator with data check== <source lang="cpp">#include<iostream.h> class Time { int hour; int minute; int second; public: friend ostream& operator<<( ostream &, Time); friend istream& operator>>( istream &,Time &); }; ostream& operator<<( ostream & out, Time t) { out<<"\nHere"s the time:\n"; out<<t.hour<<":"<<t.minute<<":"<<t.second<<"\n"; return out; } istream& operator>>( istream & in ,Time & t) { cout<<"Please enter the time as follow\n"; do{ cout<<"What is the hour(0-23)?"; in>>t.hour; if((t.hour<0)||(t.hour>23)) cout<<"You have inpitted a wrong data! Please try again!\n"; }while((t.hour<0)||(t.hour>23)); do{ cout<<"What is the minute(0-59)?"; in>>t.minute; if((t.minute<0)||(t.minute>59)) cout<<"You have inpitted a wrong data! Please try again!\n"; }while((t.minute<0)||(t.minute>59)); do{ cout<<"What is the second(0-23)?"; in>>t.second; if((t.second<0)||(t.second>59)) cout<<"You have inpitted a wrong data! Please try again!\n"; }while((t.second<0)||(t.second>59)); return in; } main() { Time now; cin>>now; cout<<now; return 0; }</source> <pre class=codeResult>Please enter the time as follow What is the hour(0-23)?12 What is the minute(0-59)?12 What is the second(0-23)?12 Here"s the time: 12:12:12</pre> ==ostream and istream operator for a class== <source lang="cpp">#include <iostream> #include <cstring> using namespace std; class MyClass { char name[80]; int id; int prefix; int value; public: MyClass() { }; MyClass(char *n, int a, int p, int nm) { strcpy(name, n); id = a; prefix = p; value = nm; } friend ostream &operator<<(ostream &stream, MyClass o); friend istream &operator>>(istream &stream, MyClass &o); }; // Display name and phone valueber. ostream &operator<<(ostream &stream, MyClass o) { stream << o.name << " "; stream << "(" << o.id << ") "; stream << o.prefix << "-" << o.value << "\n"; return stream; // must return stream } // Input name and telephone valueber. istream &operator>>(istream &stream, MyClass &o) { cout << "Enter name: "; stream >> o.name; cout << "Enter id: "; stream >> o.id; cout << "Enter prefix: "; stream >> o.prefix; cout << "Enter value: "; stream >> o.value; cout << "\n"; return stream; } int main() { MyClass a; cin >> a; cout << a; return 0; }</source> <pre class=codeResult>Enter name: Joe Enter id: 123 Enter prefix: 1 Enter value: 2 Joe (123) 1-2</pre> ==Overloading >>: To demonstrate a custom inserter, one will be created for objects of type phonebook, shown here.== <source lang="cpp">#include <iostream> #include <cstring> using namespace std; class phonebook { public: char name[80]; int areacode; int prefix; int num; phonebook(char *n, int a, int p, int nm) { strcpy(name, n); areacode = a; prefix = p; num = nm; } }; // Display name and phone number. ostream &operator<<(ostream &stream, phonebook o) { stream << o.name << " "; stream << "(" << o.areacode << ") "; stream << o.prefix << "-" << o.num << "\n"; return stream; // must return stream } int main() { phonebook a("A", 111, 555, 1234); phonebook b("B", 312, 555, 5768); phonebook c("C", 212, 555, 9991); cout << a < return 0; }</source> ==Overload == <source lang="cpp">#include <iostream> #include <cstring> using namespace std; class phonebook { // now private char name[80]; int areacode; int prefix; int num; public: phonebook(char *n, int a, int p, int nm) { strcpy(name, n); areacode = a; prefix = p; num = nm; } friend ostream &operator<<(ostream &stream, phonebook o); }; // Display name and phone number. ostream &operator<<(ostream &stream, phonebook o) { stream << o.name << " "; stream << "(" << o.areacode << ") "; stream << o.prefix << "-" << o.num << "\n"; return stream; // must return stream } int main() { phonebook a("A", 111, 555, 1234); phonebook b("B", 312, 555, 5768); phonebook c("C", 212, 555, 9991); cout << a < return 0; }</source> ==Overload ostream and istream operator== <source lang="cpp">#include <iostream> #include <fstream> #include <cstring> using namespace std; class MyClass { char name[80]; char areacode[4]; char prefix[4]; char num[5]; public: MyClass() { }; MyClass(char *n, char *a, char *p, char *nm) { strcpy(name, n); strcpy(areacode, a); strcpy(prefix, p); strcpy(num, nm); } friend ostream &operator<<(ostream &stream, MyClass o); friend istream &operator>>(istream &stream, MyClass &o); }; // Display name and phone number. ostream &operator<<(ostream &stream, MyClass o) { stream << o.name << " "; stream << "(" << o.areacode << ") "; stream << o.prefix << "-"; stream << o.num << "\n"; return stream; // must return stream } // Input name and telephone number. istream &operator>>(istream &stream, MyClass &o) { cout << "Enter name: "; stream >> o.name; cout << "Enter area code: "; stream >> o.areacode; cout << "Enter prefix: "; stream >> o.prefix; cout << "Enter number: "; stream >> o.num; cout << "\n"; return stream; } int main() { MyClass a; char c; fstream pb("phone", ios::in | ios::out | ios::app); if(!pb) { cout << "Cannot open phone book file.\n"; return 1; } cin >> a; pb << a; // write to disk char ch; pb.seekg(0, ios::beg); while(!pb.eof()) { pb.get(ch); if(!pb.eof()) cout << ch; } pb.clear(); // reset eof cout << endl; pb.close(); }</source> <pre class=codeResult>Cannot open phone book file.</pre></div>

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