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std::wcstol, std::wcstoll

De cppreference.com
< cpp‎ | string‎ | wide

 
 
Strings biblioteca
Terminadas en nulo
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Null-terminated strings
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Cadenas de bytes
Multibyte cuerdas
Cadenas anchas
Clases
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Classes
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basic_string
char_traits
 
Terminadas en nulo de ancho
Funciones
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Functions
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De manipulación de caracteres
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Character manipulation
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Las conversiones a formatos numéricos
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Conversions to numeric formats
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wcstol
wcstoll
wcstoul
wcstoull
Cadena de manipulación
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String manipulation
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Matriz de manipulación
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Array manipulation
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wmemcpy
wmemmove
wmemcmp
wmemchr
wmemset
 
Defined in header <cwchar>
long      wcstol( const wchar_t* str, wchar_t** str_end, int base );
long long wcstoll( const wchar_t* str, wchar_t** str_end, int base );
(desde C++11)
Interpreta un valor entero en una cadena ancha apuntado por str .
Original:
Interprets an integer value in a wide string pointed to by str.
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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:

  • (opcional) plus or minus sign
  • (opcional) prefix (0) indicating octal base (applies only when the base is 8)
  • (opcional) 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.

Las funciones establece el puntero que apunta al punto str_end al carácter ancho allá del último carácter interpretado. Si str_end es NULL, se omite .
Original:
The functions sets the pointer pointed to by str_end to point to the wide character past the last character interpreted. If str_end is NULL, it is ignored.
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Contenido

[editar] Parámetros

str -
puntero a la cadena terminada en cero de ancho para ser interpretada
Original:
pointer to the null-terminated wide string to be interpreted
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str_end -
puntero a un puntero a carácter ancho
Original:
pointer to a pointer to wide character
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base -
Base del valor entero interpretado
Original:
base of the interpreted integer value
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[editar] Valor de retorno

Valor entero correspondiente al contenido de str en caso de éxito. Si el valor convertido cae fuera del rango de tipo de retorno correspondiente, se produce error en la distancia y LONG_MAX, LONG_MIN, LLONG_MAX o LLONG_MIN se devuelve. Si la conversión no se puede realizar, 0 se devuelve .
Original:
Integer value corresponding to the contents of str on success. If the converted value falls out of range of corresponding return type, range error occurs and LONG_MAX, LONG_MIN, LLONG_MAX or LLONG_MIN is returned. If no conversion can be performed, 0 is returned.
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[editar] Ejemplo

[editar] Ver también

convierte una cadena gruesa y un valor entero sin signo
Original:
converts a wide string to an unsigned integer value
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(función) [edit]
C documentation for wcstol, wcstoll