C Language Program To Display Disk Space in Dos System

#include <stdio.h>

#include <dos.h>

#include <conio.h>

void main(void)

{

struct dfree diskinfo;

long disk_space;

clrscr();

getdfree(3, &diskinfo);

disk_space = (long) diskinfo.df_avail * (long) diskinfo.df_bsec * (long) diskinfo.df_sclus;

printf("Available disk space %ld\n", disk_space);

clrscr();

}

Sample Output :
Available disk space 215359488

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