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std::malloc

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< cpp‎ | memory‎ | c

 
 
Biblioteca de utilitários
Digite apoio (basic types, RTTI, type traits)
Gerenciamento de memória dinâmica
De tratamento de erros
Utilidades do programa
Variadic funções
Data e hora
Objetos de função
(C++11)
Os operadores relacionais
Original:
Relational operators
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rel_ops::operator!=
rel_ops::operator>
rel_ops::operator<=
rel_ops::operator>=
Pares e tuplas
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Pairs and tuples
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(C++11)
Troque, avançar e avançar
Original:
Swap, forward and move
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(C++11)
(C++11)
(C++11)
 
Gerenciamento de memória dinâmica
Gerenciamento de memória de baixo nível
Alocadores
Original:
Allocators
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Uninitialized armazenamento
Original:
Uninitialized storage
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Ponteiros inteligentes
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Smart pointers
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(C++11)
(C++11)
(C++11)
(obsoleta)
(C++11)
Apoio a coleta de lixo
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Garbage collection support
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Diversos
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Miscellaneous
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(C++11)
(C++11)
C Library
Original:
C Library
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malloc
 
Definido no cabeçalho <cstdlib>
void* malloc(std::size_t size );
Aloca size bytes de armazenamento não inicializado.
Original:
Allocates size bytes of uninitialized storage.
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Se a alocação for bem sucedida, retorna um ponteiro para o byte mais baixo (primeiro) no bloco de memória alocada que é adequadamente alinhado para qualquer tipo de objeto.
Original:
If allocation succeeds, returns a pointer to the lowest (first) byte in the allocated memory block that is suitably aligned for any object type.
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Se size é zero, o comportamento é implementação definida (ponteiro nulo pode ser devolvida, ou algum ponteiro não nulo pode ser retornado que não pode ser utilizado para aceder a armazenamento)
Original:
If size is zero, the behavior is implementation defined (null pointer may be returned, or some non-null pointer may be returned that may not be used to access storage)
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Índice

[editar]Parâmetros

size -
número de bytes para alocar
Original:
number of bytes to allocate
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[editar]Valor de retorno

Ponteiro para o início da memória recém-alocado ou ponteiro nulo se o erro ocorreu. O ponteiro deve ser desalocado com free().
Original:
Pointer to the beginning of newly allocated memory or null pointer if error has occurred. The pointer must be deallocated with free().
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[editar]Notas

Esta função não chamar construtores ou inicializar a memória de qualquer forma. Assim, o método preferido de alocação de memória, é a expressão new.
Original:
This function does not call constructors or initialize memory in any way. Thus preferred method of memory allocation is new expression.
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[editar]Exemplo

[editar]Veja também

funções de alocação
Original:
allocation functions
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(função)[edit]
Obtém o armazenamento não inicializado
Original:
obtains uninitialized storage
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(modelo de função)[edit]
Documentação C para malloc
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