Is fclose needed when fopen has failed?

Question

consider the below code snippet.

{
....
FILE *fptr = fopen("file_that_does_not_exist","r");
...
}

here, if fopen fails, do we still need to call fclose() for some cleanup ??

Answer 1

No, since fopen() returns 0, which is an invalid file handle. fclose() may even crash if you try to do this.