std::strncpy
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| Definido en el archivo de encabezado <cstring>
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char *strncpy( char *dest, const char *src, std::size_t count ); |
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Las copias de la mayoría de los caracteres de la cadena
count byte apuntado por src (incluyendo el carácter nulo de terminación) a cadena de caracteres apuntada por dest . Original:
Copies at most
count characters of the byte string pointed to by src (including the terminating null character) to character array pointed to by dest. 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.
Si
count se alcanza antes de la src cadena entera se ha copiado, la matriz de caracteres resultante no es terminada en cero .Original:
If
count is reached before the entire string src was copied, the resulting character array is not null-terminated.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.
Si después de copiar el carácter nulo de terminación de
src, count no se alcanza, otros caracteres nulos se escriben en dest hasta que el total de caracteres count se han escrito .Original:
If, after copying the terminating null character from
src, count is not reached, additional null characters are written to dest until the total of count characters have been written.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.
Si las cadenas se superponen, el comportamiento no está definido .
Original:
If the strings overlap, 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.
Parámetros
| dest | - | puntero a la matriz de caracteres a copiar
Original: pointer to the character array 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 | - | puntero a la cadena de bytes a copiar
Original: pointer to the byte string 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 máximo de caracteres a copiar
Original: maximum number of characters 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
Ejemplo
Ejecuta este código
#include <iostream>
#include <cstring>
int main()
{
const char* src = "hi";
char dest[6] = {'a', 'b', 'c', 'd', 'e', 'f'};;
std::strncpy(dest, src, 5);
std::cout << "The contents of dest are: ";
for (char c : dest) {
if (c) {
std::cout << c << ' ';
} else {
std::cout << "\\0" << ' ';
}
}
std::cout << '\n';
}
Salida:
The contents of dest are: h i \0 \0 \0 f
Ver también
| Copia una cadena a otra (función) | |
| Copia un búfer a otro (función) | |
Documentación de C para strncpy
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