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Free Disk space

Reports the free disk space on a DOS system

#include <stdio.h>
#include <dos.h>

void main(void)

{
struct dfree diskinfo;
long disk_space;
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);
}

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