void * memset ( void * ptr, int value, size_t num ); |
<cstring> |
Fill block of memory
Sets the first num bytes of the block of memory pointed by ptr to the specified value (interpreted as an unsigned char).
Parameters
- ptr
- Pointer to the block of memory to fill.
- value
- Value to be set. The value is passed as an int, but the function fills the block of memory using the unsigned char conversion of this value.
- num
- Number of bytes to be set to the value.
Return Value
ptr is returned.
Example
/* memset example */
#include <stdio.h>
#include <string.h>
int main ()
{
char str[] = "almost every programmer should know memset!";
memset (str,'-',6);
puts (str);
return 0;
}
|
Output:
------ every programmer should know memset!
|
See also
| memcpy | Copy block of memory (function) |
| strncpy | Copy characters from string (function) |
| memcmp | Compare two blocks of memory (function) |
