_memccpy
Copies characters from a buffer.
void *_memccpy(
void *dest,
const void *src,
int c,
size_t count
);
Параметры
dest
Pointer to the destination.src
Pointer to the source.c
Last character to copy.count
Number of characters.
Возвращаемое значение
If the character c is copied, _memccpy returns a pointer to the char in dest that immediately follows the character. If c is not copied, it returns NULL.
Заметки
The _memccpy function copies 0 or more characters of src to dest, halting when the character c has been copied or when count characters have been copied, whichever comes first.
Security Note Make sure that the destination buffer is the same size or larger than the source buffer. For more information, see Avoiding Buffer Overruns.
Требования
Routine |
Required header |
|---|---|
_memccpy |
<memory.h> or <string.h> |
For more compatibility information, see Compatibility in the Introduction.
Libraries
All versions of the C run-time libraries.
Пример
// crt_memccpy.c
#include <memory.h>
#include <stdio.h>
#include <string.h>
char string1[60] = "The quick brown dog jumps over the lazy fox";
int main( void )
{
char buffer[61];
char *pdest;
printf( "Function: _memccpy 60 characters or to character 's'\n" );
printf( "Source: %s\n", string1 );
pdest = _memccpy( buffer, string1, 's', 60 );
*pdest = '\0';
printf( "Result: %s\n", buffer );
printf( "Length: %d characters\n", strlen( buffer ) );
}
Output
Function: _memccpy 60 characters or to character 's' Source: The quick brown dog jumps over the lazy fox Result: The quick brown dog jumps Length: 25 characters