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char *file_name;
FILE *f_ptrfp;

/* initialize file_name */

f_ptrfp = fopen(file_name, "w");
if (f_ptrfp == NULL) {
  /* Handle Error */
}

/*... Process file ...*/

if (fclose(f_ptrfp) != 0) {
  /* Handle Error */
}

if (remove(file_name) != 0) {
  /* Handle Error */
}

char *file_name;
FILE *f_ptrfp;

/* initialize file_name */

if (!secure_dir(pathfile_name)) {
  /* Handle Error */
}

f_ptrfp = fopen(file_name, "w");
if (f_ptrfp == NULL) {
  /* Handle Error */
}

/*... Process file ...*/

if (fclose(f_ptrfp) != 0) {
  /* Handle Error */
}

if (remove(file_name) != 0) {
  /* Handle Error */
}