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874天前#include <process.h> |
#include <string.h> |
#include <stdio.h> |
#include <dos.h> |
int main(void) |
{ |
char far *save_dta; |
char line[80], buffer[256]; |
struct fcb blk; |
int i, result; |
/* get user input file name for dta */ |
printf("Enter drive and file name (no path - i.e. a:file.dat)\n"); |
gets(line); |
/* put file name in fcb */ |
if (!parsfnm(line, &blk, 1)) |
{ |
printf("Error in call to parsfnm\n"); |
exit(1); |
} |
printf("Drive #%d File: %s\n\n", blk.fcb_drive, blk.fcb_name); |
/* open file with DOS FCB open file */ |
bdosptr(0x0F, &blk, 0); |
/* save old dta, and set new one */ |
save_dta = getdta(); |
setdta(buffer); |
/* set up info for the new dta */ |
blk.fcb_recsize = 128; |
blk.fcb_random = 0L; |
result = randbrd(&blk, 1); |
/* check results from randbrd */ |
if (!result) |
printf("Read OK\n\n"); |
else |
{ |
perror("Error during read"); |
exit(1); |
} |
/* read in data from the new dta */ |
printf("The first 128 characters are:\n"); |
for (i=0; i<128; i++) |
putchar(buffer[i]); |
/* restore previous dta */ |
setdta(save_dta); |
return 0; |
} |
