Namespace
Varianti

<div class="t-tr-text">C + +: le parole chiave<div class="t-tr-dropdown"><div><div><div class="t-tr-dropdown-arrow-border"></div><div class="t-tr-dropdown-arrow"></div><div class="t-tr-dropdown-h">Original:</div><div class="t-tr-dropdown-orig">C++ keywords:</div><div class="t-tr-dropdown-notes">The text has been machine-translated via [http://translate.google.com Google Translate].<br/> You can help to correct and verify the translation. Click [http://en.cppreference.com/w/Cppreference:MachineTranslations here] for instructions.</div></div></div></div></div> class

Da cppreference.com.
< cpp‎ | keyword

 
 
Linguaggio C + +
Temi generali
Original:
General topics
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Controllo del flusso
Original:
Flow control
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Dichiarazioni esecuzione condizionale
Original:
Conditional execution statements
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Iterazione dichiarazioni
Original:
Iteration statements
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Vai dichiarazioni
Original:
Jump statements
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Funzioni
Original:
Functions
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dichiarazione di funzione
lambda funzione dichiarazione
funzione di modello
specificatore inline
eccezioni specifiche (deprecato)
noexcept specificatore (C++11)
Eccezioni
Original:
Exceptions
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Spazi dei nomi
Original:
Namespaces
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Tipi
Original:
Types
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decltype specifier (C++11)
Specifiers
Original:
Specifiers
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cv specificatori
Durata di stoccaggio specificatori
constexpr specificatore (C++11)
specificatore auto (C++11)
alignas specificatore (C++11)
Inizializzazione
Original:
Initialization
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Letterali
Original:
Literals
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Espressioni
Original:
Expressions
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rappresentazioni alternative
Utilities
Original:
Utilities
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Tipi
Original:
Types
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typedef declaration
Tipo alias dichiarazione (C++11)
attributi (C++11)
Lancia
Original:
Casts
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conversioni implicite
const_cast conversion
static_cast conversion
dynamic_cast conversion
reinterpret_cast conversion
Fusione C-stile e funzionale
Occupazione della memoria
Original:
Memory allocation
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Classi
Original:
Classes
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Specifiche per una classe di funzioni proprietà
Original:
Class-specific function properties
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esplicito (C++11)
statico
Funzioni membro speciali
Original:
Special member functions
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Modelli
Original:
Templates
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classe template
funzione di modello
modello di specializzazione
parametri confezioni (C++11)
Varie
Original:
Miscellaneous
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Montaggio in linea
 
 

[modifica] Utilizzo

  • dichiarazione di una classe
  • In un classe template o funzione di modello, class può essere utilizzata come alternativa al typename introdurre parametri di modello di tipo.
    Original:
    In a classe template or funzione di modello, class can be used as an alternative to typename to introduce type template parameters.
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  • Se una funzione o una variabile esiste nel campo di applicazione con il nome identico al nome di un tipo di classe, class può essere anteposto al nome di disambiguazione, risultante in un identificatore di tipo elaborato
    Original:
    If a function or a variable exists in scope with the name identical to the name of a class type, class can be prepended to the name for disambiguation, resulting in an elaborated type specifier
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[modifica] Esempio

class Foo;  // forward declaration of a class
 
class Bar { // definition of a class
  public:
    Bar(int i) : m_i(i) {}
  private:
    int m_i;
};
 
template <class T> // template argument
void qux() {
    T t;
}
 
int main()
{
    Bar Bar(1);
    class Bar Bar2(2); // elaborated type
}