std::memset
De cppreference.com
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<tbody> </tbody>| Definido no cabeçalho <cstring>
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void* memset( void* dest, int ch, std::size_t count ); |
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Converte o valor para
ch unsigned char e copia-lo em cada um dos personagens count primeira do objeto apontado por dest. Se o objeto não é trivialmente-copiável (por exemplo, escalar, matriz, ou uma estrutura compatível com C), o comportamento é indefinido. Se count é maior do que o tamanho do objeto apontado por dest, o comportamento é indefinido.Original:
Converts the value
ch to unsigned char and copies it into each of the first count characters of the object pointed to by dest. If the object is not trivially-copyable (e.g., scalar, array, or a C-compatible struct), the behavior is undefined. If count is greater than the size of the object pointed to by dest, the behavior is undefined.The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
You can help to correct and verify the translation. Click here for instructions.
Parâmetros
| dest | - | ponteiro para o objeto para preencher
Original: pointer to the object to fill The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. |
| ch | - | encher byte
Original: fill byte 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 para preencher
Original: number of bytes to fill 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()
{
int a[20];
std::memset(a, 0, sizeof(a));
std::cout << "a[0] = " << a[0] << '\n';
}
Saída:
a[0] = 0