C Program Check Disk (CHKDSK)

#include <iostream.h>
#include <dos.h>
#include <dir.h>
#include <conio.h>
#include <string.h>
#include <stdlib.h>
//--------------------------------------------------------------------


void chkdsk ( )
{
 dfree fdisk ;
 int disk = getdisk() ;
 getdfree( disk+1 , &fdisk ) ;

 cout << endl ;
 cout << "Information for Disk Drive : " ;
 cout << ( ( (disk+1) == 3 ) > "C:" :
    ( (disk+1) == 4 ) > "D:" :
    ( (disk+1) == 5 ) > "E:" :
       ""  );
 int x, y ;
 cout << endl ;
 cout << endl ;
 x = wherex() , y = wherey() ;

 gotoxy ( x+10 , y ) ;
 cout <<"Total Clusters .......... : " ;
 cout << (long)fdisk.df_total << endl;  /* Total clusters */
 cout << endl ;

 x = wherex() , y = wherey() ;
 gotoxy ( x+10 , y ) ;
 cout <<"Sector Per Cluster ...... : " ;
 cout << (long)fdisk.df_sclus << endl;  /* Sectors per cluster */
 cout << endl ;

 x = wherex() , y = wherey() ;
 gotoxy ( x+10 , y ) ;
 cout <<"Bytes Per Sector ........ : " ;
 cout << (long)fdisk.df_bsec  << endl;   /* Bytes per sector */
 cout << endl ;

 x = wherex() , y = wherey() ;
 gotoxy ( x+10 , y ) ;
 cout <<"Total Disk Size ......... : " ;
 cout << (long)fdisk.df_total*(long)fdisk.df_sclus*(long)fdisk.df_bsec ;
 cout << " Bytes Available";
 cout << endl ;
 cout << endl ;
 cout << endl ;

 x = wherex() , y = wherey() ;
 gotoxy ( x+10 , y ) ;
 cout <<"Total Clusters Free ..... : " ;
 cout << (long)fdisk.df_avail << endl;  /* Available clusters */
 cout << endl ;

 x = wherex() , y = wherey() ;
 gotoxy ( x+10 , y ) ;
 cout <<"Total Free Space ........ : " ;
 cout << (long)fdisk.df_avail*(long)fdisk.df_sclus*(long)fdisk.df_bsec ;
 cout << " Bytes Available";


}

//***********************************

void chkdsk ( char *arg )
{
 char driveletter[1];

 strncpy ( driveletter , arg , 1 ) ;
 driveletter[1] = '\0' ;

 int disk = 0 ;
 if ( strcmpi ( driveletter , "C" ) == 0 )
 {
  disk = 3 ;
 }
 else
 if ( strcmpi ( driveletter , "D" ) == 0 )
 {
  disk = 4 ;
 }
 else
 {
  cout << driveletter ;
  exit(0);
 }


 dfree fdisk ;
 getdfree( disk , &fdisk ) ;

 cout << endl ;
 cout << "Information for Disk Drive : " ;
 cout << ( ( (disk) == 3 ) > "C:" :
    ( (disk) == 4 ) > "D:" :
    ( (disk) == 5 ) > "E:" :
       ""  );
 int x, y ;
 cout << endl ;
 cout << endl ;
 x = wherex() , y = wherey() ;

 gotoxy ( x+10 , y ) ;
 cout <<"Total Clusters .......... : " ;
 cout << (long)fdisk.df_total << endl;  /* Total clusters */
 cout << endl ;

 x = wherex() , y = wherey() ;
 gotoxy ( x+10 , y ) ;
 cout <<"Sector Per Cluster ...... : " ;
 cout << (long)fdisk.df_sclus << endl;  /* Sectors per cluster */
 cout << endl ;

 x = wherex() , y = wherey() ;
 gotoxy ( x+10 , y ) ;
 cout <<"Bytes Per Sector ........ : " ;
 cout << (long)fdisk.df_bsec  << endl;   /* Bytes per sector */
 cout << endl ;

 x = wherex() , y = wherey() ;
 gotoxy ( x+10 , y ) ;
 cout <<"Total Disk Size ......... : " ;
 cout << (long)fdisk.df_total*(long)fdisk.df_sclus*(long)fdisk.df_bsec ;
 cout << " Bytes Available";
 cout << endl ;
 cout << endl ;
 cout << endl ;

 x = wherex() , y = wherey() ;
 gotoxy ( x+10 , y ) ;
 cout <<"Total Clusters Free ..... : " ;
 cout << (long)fdisk.df_avail << endl;  /* Available clusters */
 cout << endl ;

 x = wherex() , y = wherey() ;
 gotoxy ( x+10 , y ) ;
 cout <<"Total Free Space ........ : " ;
 cout << (long)fdisk.df_avail*(long)fdisk.df_sclus*(long)fdisk.df_bsec ;
 cout << " Bytes Available";


}

//--------------------------------------------------------------------

void main ( int argc , char *args[] )
{

 if ( argc == 1 )
 chkdsk ();
 else
 if ( argc == 2 )
 chkdsk ( args[1] ) ;
 else
 cout << "Incorrect Synatx.";

}