memset, wmemset
Visual Studio 2010
Sets buffers to a specified character.
void *memset( void *dest, int c, size_t count ); wchar_t *wmemset( wchar_t *dest, wchar_t c, size_t count );
Sets the first count characters of dest to the character c.
Security Note Make sure that the destination buffer has enough room for at least count characters. For more information, see Avoiding Buffer Overruns.
Routine | Required header |
|---|---|
memset | <memory.h> or <string.h> |
wmemset | <wchar.h> |
For additional compatibility information, see Compatibility in the Introduction.
Libraries
All versions of the C run-time libraries.
// crt_memset.c
/* This program uses memset to
* set the first four chars of buffer to "*".
*/
#include <memory.h>
#include <stdio.h>
int main( void )
{
char buffer[] = "This is a test of the memset function";
printf( "Before: %s\n", buffer );
memset( buffer, '*', 4 );
printf( "After: %s\n", buffer );
}
Before: This is a test of the memset function After: **** is a test of the memset function
Here's an example of the use of wmemset:
// crt_wmemset.c
/* This program uses memset to
* set the first four chars of buffer to "*".
*/
#include <wchar.h>
#include <stdio.h>
int main( void )
{
wchar_t buffer[] = L"This is a test of the wmemset function";
wprintf( L"Before: %s\n", buffer );
wmemset( buffer, '*', 4 );
wprintf( L"After: %s\n", buffer );
}
