Writing program for Non–Destructive data wiper
The non-destructive data wiper is a kind of data wiping program by using which we can wipe out the entire “unallocated space” of the disk volume, without harming the data which is stored in disk, in any way.
The scope of such data wiper is in the cases, where you want to wipe out all the unallocated space of the disk volume while the allocated data stored in the volume should remain untouched. This type of data wiping program also wipes out the data area of deleted files.
The program coding for a type of non – destructive data wiping program has been given next:
///// Program for a Non Destructive Data Wiper \\\\\
#include <stdio.h>
unsigned int file_num=0; /* Provides File Number
During the Auto Creation
of Temporary Data files */
float status=0; /* How Much Disk space is
still Written */
static char dbuf[40000]; /* Data Buffer to write
Temporary Files with */
char file_extension[5]=".ptt";/* Unique Extensions for
Temporary Files */
char temp[5]; /* File Number converted to
String */
char filename[40]; /* Temporary File name */
void main()
{
unsigned int i=0;
clrscr();
while(i<40000)
{
dbuf[i] = ' ';
i++;
}
gotoxy(10,14);cprintf(" MB Still Written...");
while(1)
{
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