fclose

#include <stdio.h>

int fclose (
    FILE *stream);   /* file stream to close */

The fclose function closes the file stream opened by the fopen function. All buffers associated with the stream are flushed prior to closing. Buffers allocated by the system are released when the stream is closed.

The fclose function is in the RL-FlashFS library. The prototype is defined in stdio.h.

The fclose function returns a value of 0 if the stream is successfully closed. A return value of EOF indicates an error.

fflush, fopen

#include <rtl.h>
#include <stdio.h>

void tst_fclose (void) {
  FILE *fin;

  fin = fopen ("Test.txt","r");
  if (fin == NULL) {
    printf ("File not found!\n");
  }
  else {
    // process file content
    fclose (fin);
  }
}