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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);

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

/* flush the data to DUMMY.FIL without closing it */

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

void flush(FILE *stream)
int duphandle;

/* flush the stream's internal buffer */

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

/* close the duplicate handle to flush the DOS buffer */

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