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New program after alteration:
questions::
1) Is this way of writing integer to the file is correct?
if correct the why i am getting an empty file?
if wrong means how should i write an...

I am creating a file to store data, but the file does not get created at all.

#include <unistd.h>
#define DEFAULT_ID 0

int main()
{
int d, n=0;
int sz, data=0;
char fn[256];
...

Hi Expl and JohnGraham

int main() {
unsigned char wwn[8]="\x50\x00\x53\x30\x8\x9\x82\x17";
unsigned char wwn1[8]="\x50\x00\x53\x30\x08\x09\x82\x21";
print_wwn(wwn);
...

Thanks a lot expl

Hi Expl and JohnGraham

1)Can i know the reason why the compile doesn't understand the following assignment?

(i)unsigned char pwwn[8]="0x5000533008098217";
or
(ii)unsigned char...

Thanks for ur input JohnGraham

cat int.c

int main() {
unsigned char wwn[8];
unsigned char pwwn[8]="0x5000533008098217";
wwn[0]=0x50;
wwn[1]=0x00;
wwn[2]=0x53;
...

cat int.c

int main() {
unsigned char wwn[8];
wwn[0]=50;
wwn[1]=00;
wwn[2]=53;
wwn[3]=30;
wwn[4]=08;
wwn[5]=09;
wwn[6]=82;
wwn[7]=17;
printf("WWN:...

If you what to open the directory,
open directory with vi editor, it will display all the file names inside it.

For unsigned interger the MSB(most significant bit) is '0'.
For signed interger the MSB(most significant bit) is '1'.

For example,(I) 12 is represented as 0000 1100
(II)-12 is...

Hi Don cragun, its exactly like this
#define TI_ZN_FAILOVER (1 << 1) /* bit 1 */
#define TI_ENT_PORT (1 << 2) /* bit 2 */
#define TI_ENT_WWN (1 << 3) /* bit 3 */...

what is the difference b/w

1) #define TI_ZN (1 << 1)
#define TI_ZN (1 << 2)
and
2) #define TI_ZN 2
#define TI_ZN 4

Instead of using left...

I want address of current virtual memory block?
i am using fedora10:wall::wall:

:wall::wall::wall:how to register ISR for PCI slot using callback registery (in c programing)
i am using fedora 10 os.:wall::wall::wall::wall::wall:

how to register callback function in unix??