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memset, wmemset 

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
);

Parameters

dest

Pointer to destination.

c

Character to set.

count

Number of characters.

The value of dest.

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 Compatibility

memset

<memory.h> or <string.h>

ANSI, Windows 95, Windows 98, Windows 98 Second Edition, Windows Millennium Edition, Windows Millennium Edition, Windows NT 4.0, Windows 2000, Windows XP Home Edition, Windows XP Professional, Windows Server 2003

wmemset

<wchar.h>

ANSI, Windows 95, Windows 98, Windows 98 Second Edition, Windows Millennium Edition, Windows Millennium Edition, Windows NT 4.0, Windows 2000, Windows XP Home Edition, Windows XP Professional, Windows Server 2003

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 );
}
Before: This is a test of the wmemset function
After:  **** is a test of the wmemset function
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