Re: Printing a NULL pointer

junky_fellow@xxxxxxxxxxx wrote:

> Is there any way by which user can determine what is the internal
> representation for a NULL pointer ? I am asking this because,
> sometimes during debugging the memory dump is analysed. In that
> case it would be difficult to find it is a NULL pointer or not.

/* BEGIN new.c */

#include <stdio.h>

int main(void)
{
void *pointer = NULL;
size_t byte;

for (byte = 0; byte != sizeof pointer; ++byte) {
printf(
"byte %lu is 0x%u\n",
(long unsigned)byte,
(unsigned)((unsigned char *)&pointer)[byte]
);
}
puts(
"There may be more than one "
"representation for a null pointer."
);
return 0;
}

/* END new.c */

--
pete
.

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