std::memcpy
De cppreference.com
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<tbody> </tbody>| Definido no cabeçalho <cstring>
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void* memcpy( void* dest, const void* src, std::size_t count ); |
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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.
Parâmetros
| dest | - | ponteiro para o local de memória para copiar
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 | - | ponteiro para o local de memória para copiar
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 | - | número de bytes a serem copiados
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. |
Valor de retorno
dest
Exemplo
#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';
}
}
Saída:
o
n
c
e