thank you for reply , but I use C language .

then how to print the hexadecimal values in a format of two digits ?

this funny "fread" doing the job , exactly as i need , any way ,, how to make it not funny ?

I use the bellow code to read binary file but it throws an exceptions at run time and sometimes gives a wrong results , please tell me what's the wrong ?

#include
#include

unsigned long size,n;
int main()
{
unsigned char *buf;
FILE* fp;
fp=fopen ("myfile.bin","rb");
if (fp == NULL) {
fprintf(stderr, "Can't open the file");
exit(1);}

fseek (fp,0,SEEK\_END);	//
size=ftell (fp);		//	get the size of the file
fseek (fp,0,SEEK\_SET);	//

if ((buf=(unsigned char\*) malloc (size+1))==0)
	printf("\\n%s","allocation Error");

n=fread (buf,sizeof (buf),size,fp);
printf ("\\n%02x %lu bytes read",buf\[15\],n);

free (buf);
fclose (fp);
return 0;

}