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std::memset

De cppreference.com
< cpp‎ | string‎ | byte

 
 
Strings biblioteca
Terminadas en nulo
Original:
Null-terminated strings
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Cadenas de bytes
Multibyte cuerdas
Cadenas anchas
Clases
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Classes
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basic_string
char_traits
 
Terminadas en nulo de bytes
Funciones
Original:
Functions
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De manipulación de caracteres
Original:
Character manipulation
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Las conversiones a formatos numéricos
Original:
Conversions to numeric formats
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Cadena de manipulación
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String manipulation
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strcpy
strncpy
strcat
strncat
strxfrm
Cadena examen
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String examination
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Memoria manipulación
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Memory manipulation
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memchr
memcmp
memset
memcpy
memmove
Varios
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Miscellaneous
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strerror
 
Defined in header <cstring>
void* memset( void* dest, int ch, std::size_t count );
Convierte el valor a ch unsigned char y lo copia en cada uno de los personajes count primera del objeto apuntado por dest. Si el objeto no es trivial-copiable (por ejemplo, escalar, matriz o una estructura C-compatible), el comportamiento no está definido. Si count es mayor que el tamaño del objeto apuntado por dest, el comportamiento es 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.
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Contenido

[editar] Parámetros

dest -
puntero al objeto de llenar
Original:
pointer to the object to fill
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ch -
llenar byte
Original:
fill byte
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count -
número de bytes que llenar
Original:
number of bytes to fill
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[editar] Valor de retorno

dest

[editar] Ejemplo

#include <iostream>
#include <cstring>
 
int main()
{
    int a[20];
    std::memset(a, 0, sizeof(a));
    std::cout << "a[0] = " << a[0] << '\n';
}

Output:

a[0] = 0

[editar] Ver también

copia un tampón a otro
Original:
copies one buffer to another
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(función) [edit]
asigna un valor a una serie de elementos
Original:
assigns a value to a number of elements
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(función de plantilla) [edit]
checks if a type is trivially copyable
(clase de plantilla) [edit]
C documentation for memset