std::wcstoul, std::wcstoull – cppreference.com

std::wcstoul, std::wcstoull

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C++
 
Strings Bibliothek
Null-terminierte Strings
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Null-terminated strings
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Byte-Strings
Multibyte-Strings
Wide Strings
Classes
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Classes
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basic_string
char_traits
 
Nullterminierten Wide Strings
Funktionen
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Functions
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Character Manipulation
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Character manipulation
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Umwandlungen in numerische Formate
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Conversions to numeric formats
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String-Manipulation
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String manipulation
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Array-Manipulation
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Array manipulation
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wmemcpy
wmemmove
wmemcmp
wmemchr
wmemset
 
<tbody> </tbody>
definiert in Header <cwchar>
unsigned long wcstoul( const wchar_t* str, wchar_t** str_end, int base );
unsigned long long wcstoull( const wchar_t* str, wchar_t** str_end, int base );
 (seit C++11)
Legt einen vorzeichenlosen Integer-Wert in einem breiten String, auf den str .
Original:
Interprets an unsigned 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) unsigned integer number representation and converts them to an integer value. The valid unsigned integer value consists of the following parts: None

  • (optional) prefix (0) indicating octal base (applies only when the base is 8)
  • (optional) 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.

Die Funktionen setzt den Zeiger auf die durch str_end auf die weite Zeichen nach dem letzten Zeichen interpretiert zeigen. Wenn str_end NULL ist, wird es ignoriert .
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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Parameter

str -
Zeiger auf die null-terminierte breite Zeichenfolge interpretiert werden
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pointer to the null-terminated wide string to be interpreted
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str_end -
Zeiger auf einen Zeiger auf eine breite Charakter .
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pointer to a pointer to a wide character.
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base -
Base der interpretierten Integer-Wert
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base of the interpreted integer value
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Rückgabewert

Integer-Wert entsprechend dem Inhalt der str auf Erfolg. Wenn der umgewandelte Wert fällt außerhalb der Reichweite des zugehörigen Rückgabetyp tritt Entfernungsfehlers und ULONG_MAX oder ULLONG_MAX zurückgegeben. Wenn keine Umwandlung durchgeführt werden kann, wird zurückgegeben 0 .
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 ULONG_MAX or ULLONG_MAX is returned. If no conversion can be performed, 0 is returned.
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Beispiel

This section is incomplete
Reason: no example

Siehe auch