fwrite

#include <stdio.h>

U32 fwrite (
    const void* buffer,          /* data to write to file    */
    U32         size,            /* size of each item        */
    U32         count,           /* number of items to write */
    FILE*       stream);         /* file stream to write to  */

The function fwrite writes items from a buffer to a data stream. The parameter buffer is a void pointer defining the items to write. The parameter size defines the size of the item to write. The parameter count defines the number of times to write the item. The parameter stream is a file pointer defining the data stream to write to.

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

• number of items written successfully. This number can be smaller than count if an error occured.

fputc, fputs, fread

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

void tst_fwrite (void) {
  int  count[10];
  FILE *fout;

  fout = fopen ("Counter.log","w");
  if (fout != NULL) {
    fwrite (&count[0], sizeof (int), 10, fout);   // write an item 10 times to the file
    fclose (fout);
  }
}