C/C++ Source Codes

programme for flushing last file

#include <string.h>
#include <stdio.h>
#include <conio.h>
#include <io.h>

void flush(FILE *stream);

int main(void)
{
FILE *stream;
char msg[] = "This is a test";

/* create a file */
stream = fopen("DUMMY.FIL", "w");

/* write some data to the file */
fwrite(msg, strlen(msg), 1, stream);

clrscr();
printf("Press any key to flush DUMMY.FIL:");
getch();

/* flush the data to DUMMY.FIL without closing it */
flush(stream);

printf("\nFile was flushed, Press any key to quit:");
getch();
return 0;
}

void flush(FILE *stream)
{
int duphandle;

/* flush the stream's internal buffer */
fflush(stream);

/* make a duplicate file handle */
duphandle = dup(fileno(stream));

/* close the duplicate handle to flush the DOS buffer */
close(duphandle);
}

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