std::strtol, std::strtoll

 

C++

Язык

Понятия (концепции)

Утилиты

Строки

Контейнеры

Алгоритмы

Итераторы

Работа с числами

Ввод / вывод

Локализация

Регулярные выражения (C++11)

Атомарные примитивы (C++11)

Потоки (C++11)

 

Строки

Нуль-терминальные строки

Однобайтовые строки

Многобайтовые строки

Широкие строки

Классы

basic_string

char_traits

 

Нульзаканчивающихся строк байт

Функции Original: Functions The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
Персонаж манипуляции Original: Character manipulation The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
isalnum isalpha islower isupper isdigit isxdigit isblank (C++11)	iscntrl isgraph isspace isprint ispunct tolower toupper
Преобразование в цифровой формат Original: Conversions to numeric formats The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
atof atoi atol atoll strtol strtoll	strtoul strtoull strtof strtod strtold
Строками Original: String manipulation The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
strcpy
strncpy
strcat
strncat
strxfrm
Струнный экспертизы Original: String examination The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
strlen strcmp strncmp strcoll strchr strrchr	strspn strcspn strpbrk strstr strtok
Память манипуляции Original: Memory manipulation The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
memchr
memcmp
memset
memcpy
memmove
Разное Original: Miscellaneous The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
strerror

 

Заголовочный файл <cstdlib>
long      strtol( const char *str, char **str_end, int base );
long long strtoll( const char *str, char **str_end, int base );		(начиная с C++11)

Интерпретирует целое значение в строку байт, на который указывает str.

Original:

Interprets an integer value in a byte string pointed to by str.

The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

Function discards any whitespace characters until first non-whitespace character is found. Then it takes as many characters as possible to form a valid base-n (where n=base) integer number representation and converts them to an integer value. The valid integer value consists of the following parts:

• (необязательно) plus or minus sign
• (необязательно) prefix (0) indicating octal base (applies only when the base is 8)
• (необязательно) prefix (0x or 0X) indicating hexadecimal base (applies only when the base is 16)
• a sequence of digits

The set of valid digits for base-2 integer is 01, for base-3 integer is 012, and so on. For bases larger than 10, valid digits include alphabetic characters, starting from Aa for base-11 integer, to Zz for base-36 integer. The case of the characters is ignored.

Функции устанавливает указатель на которую указывает str_end чтобы она указывала на символ после последнего символа интерпретируются. Если str_end является NULL, он игнорируется.

Original:

The functions sets the pointer pointed to by str_end to point to the character past the last character interpreted. If str_end is NULL, it is ignored.

The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

Если str пуст или не иметь ожидаемого форму, преобразование не выполняется, и (если str_end не NULL) значение str хранится в объекте, на который указывает str_end.

Original:

If the str is empty or does not have the expected form, no conversion is performed, and (if str_end is not NULL) the value of str is stored in the object pointed to by str_end.

The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

Параметры

str	-	указатель с нулевым байтом строки должны интерпретироваться Original: pointer to the null-terminated byte string to be interpreted The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
str_end	-	Указатель на указатель на символ . Original: pointer to a pointer to character. The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
base	-	' Из базы интерпретировать целое значение Original: base of the interpreted integer value The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

Возвращаемое значение

• В случае успеха, целое значение, соответствующее содержание str возвращается.

  Original:

  If successful, an integer value corresponding to the contents of str is returned.

  The text has been machine-translated via Google Translate.
  You can help to correct and verify the translation. Click here for instructions.
• Если преобразованное значение выпадает из диапазона соответствующий тип возвращения, диапазон ошибки (настройка errno в ERANGE) и LONG_MAX, LONG_MIN, LLONG_MAX или LLONG_MIN возвращается.

  Original:

  If the converted value falls out of range of corresponding return type, a range error occurs (setting errno to ERANGE) and LONG_MAX, LONG_MIN, LLONG_MAX or LLONG_MIN is returned.

  The text has been machine-translated via Google Translate.
  You can help to correct and verify the translation. Click here for instructions.
• Если преобразование не может быть выполнено, ​0​ возвращается.

  Original:

  If no conversion can be performed, ​0​ is returned.

  The text has been machine-translated via Google Translate.
  You can help to correct and verify the translation. Click here for instructions.

См. также

atoi atol atoll	преобразует байт строку в целое число Original: converts a byte string to an integer value The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (функция)
strtoul strtoull	преобразует байт строку в целое число без знака Original: converts a byte string to an unsigned integer value The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (функция)
C документация для strtol, strtoll