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    <metanoindex/>

     
    C++
     
    Utilities-Bibliothek
     
    Dynamische Speicherverwaltung
    Low-Level-Speicherverwaltung
    Zuweiser
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    Allocators
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    allocator
    allocator_traits(C++11)
    allocator_arg_t(C++11)
    allocator_arg(C++11)
    uses_allocator(C++11)
    scoped_allocator_adaptor(C++11)
    Initialisierter Speicher
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    Uninitialized storage
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    uninitialized_copy
    uninitialized_copy_n(C++11)
    uninitialized_fill
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    raw_storage_iterator
    get_temporary_buffer
    return_temporary_buffer
    Intelligente Zeiger
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    Smart pointers
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    unique_ptr(C++11)
    shared_ptr(C++11)
    weak_ptr(C++11)
    auto_ptr(veraltet)
    owner_less(C++11)
    enable_shared_from_this(C++11)
    bad_weak_ptr(C++11)
    default_delete(C++11)
    Garbage Collection Untersttzung
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    Garbage collection support
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    declare_reachable(C++11)
    undeclare_reachable(C++11)
    declare_no_pointers(C++11)
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    get_pointer_safety(C++11)
    Verschiedenes
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    Miscellaneous
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    pointer_traits(C++11)
    addressof(C++11)
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    C-Bibliothek
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    C Library
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    <tbody> </tbody>
    definiert in Header <cstdlib>
    void *realloc( void *ptr, std::size_t new_size );
    Verteilt den gegebenen Bereich des Speichers. Es muss zuvor durch malloc() zugeordnet werden, oder calloc() realloc() und noch nicht mit free() befreit, andernfalls sind die Ergebnisse undefiniert .
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    Reallocates the given area of memory. It must be previously allocated by malloc(), calloc() or realloc() and not yet freed with free(), otherwise, the results are undefined.
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    Die Umverteilung wird entweder durch getan:
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    The reallocation is done by either:
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    a)
    Erweiterung der bestehenden Flche, auf die ptr, wenn mglich. Die Inhalte des Bereichs bleiben unverndert bis zu der kleineren der neuen und alten Gren. Wenn der Bereich erweitert wird, sind die Inhalte des neuen Teils des Arrays spezifiziert .
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    expanding the existing area pointed to by ptr, if possible. The contents of the area remain unchanged up to the lesser of the new and old sizes. If the area is expanded, the contents of the new part of the array are undefined.
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    b)
    Vergabe einer neuen Speicherblock der Gre new_size bytes, Kopieren Speicherbereich mit Gre gleich der geringere der neuen und alten Gren und befreien den alten Block .
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    allocating a new memory block of size new_size bytes, copying memory area with size equal the lesser of the new and the old sizes, and freeing the old block.
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    Wenn es nicht gengend Speicher, wird die alte Speicherblock nicht freigegeben und Null-Pointer zurckgegeben .
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    If there is not enough memory, the old memory block is not freed and null-pointer is returned.
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    Parameter

    ptr -
    Zeiger auf den Speicherbereich neu zugeteilt werden
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    pointer to the memory area to be reallocated
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    new_size -
    neue Gre des Arrays
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    new size of the array
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    Rckgabewert

    Zeiger auf den Beginn des neu zugewiesenen Speicher oder NULL, wenn Fehler aufgetreten ist. Der Zeiger muss mit free() freigegeben werden .
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    Pointer to the beginning of newly allocated memory or NULL if error has occurred. The pointer must be deallocated with free().
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    Beispiel

    This section is incomplete
    Reason: no example

    Siehe auch

    C documentation for realloc
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