std::memcpy
Da cppreference.com.
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<tbody> </tbody>| Elemento definito nell'header <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.
Parametri
| dest | - | puntatore alla locazione di memoria in cui copiare
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 | - | puntatore alla locazione di memoria da cui copiare
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 | - | numero di byte da copiare
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. |
Valore di ritorno
dest
Esempio
#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