Very Computer

by **predato** » Tue, 02 May 2000 04:00:00

Whan i locate mem with malloc i read thet that memory isne clered,how to
clera that
memory?

by **Delon Nicola** » Tue, 02 May 2000 04:00:00

> Whan i locate mem with malloc i read thet that memory isne clered,how to
> clera that
> memory?

i think you can use calloc, here is an example:

char *str;

instead of writing something like str = malloc(42 * sizeof(char))
you can write str = calloc(42, sizeof(char))
and the memory allocated will be full of "zero"

by **Erik Max Franci** » Tue, 02 May 2000 04:00:00

> i think you can use calloc, here is an example:

> char *str;

> instead of writing something like str = malloc(42 * sizeof(char))
> you can write str = calloc(42, sizeof(char))
> and the memory allocated will be full of "zero"

Note that this is not guaranteed to set pointers (say, if you're
calloc'ing a struct containing a pointer) to the null pointer, because
under Standard C there is no guarantee that the null pointer has the
internal representation of all bits zero. In this case you'll have to
do an appropriate initialization, or a memberwise initialization to
zero.

by **Tim Robbin** » Fri, 05 May 2000 04:00:00

Use memset()...

#define SIZE 10
char* myblock;
if ((myblock = malloc(SIZE)) == NULL) abort();
memset (myblock, 0, SIZE);
/* do something with block */
free (myblock);

HTH,

Tim

Quote:> Whan i locate mem with malloc i read thet that memory isne clered,how to
> clera that
> memory?