std::memcpy
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definiert in Header <cstring> | ||
void* memcpy(void* dest, constvoid* src, std::size_t count ); | ||
Copies count bytes from the object pointed to by src to the object pointed to by dest.
If the objects overlap, the behavior is undefined. If the objects are not trivially copyable (e.g. scalars, arrays, C-compatible structs), the behavior is undefined.
Inhaltsverzeichnis |
[Bearbeiten]Parameter
| dest | - | Zeiger auf die Speicherstelle zu kopieren Original: pointer to the memory location to copy to The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. |
| src | - | Zeiger auf die Speicherstelle von zu kopieren Original: pointer to the memory location to copy from The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. |
| count | - | Anzahl von Bytes zu kopieren Original: number of bytes to copy The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. |
[Bearbeiten]Rückgabewert
dest
[Bearbeiten]Beispiel
#include <iostream>#include <cstring> int main(){char source[]="once upon a midnight dreary...";char dest[4]; std::memcpy(dest, source, sizeof dest);for(char c : dest){std::cout<< c <<'\n';}}
Output:
o n c e
[Bearbeiten]Siehe auch
bewegt sich ein Puffer zu einem anderen Original: moves one buffer to another The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (Funktion) | |
(C++11) | Kopiert einen Bereich von Elementen, um eine neue Position Original: copies a range of elements to a new location The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (Funktions-Template) |
Kopien einen Bereich von Elementen in rückwärts um Original: copies a range of elements in backwards order The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (Funktions-Template) | |
(C++11) | checks if a type is trivially copyable (Klassen-Template) |
C documentation for memcpy | |
