how to know if fopen creates a new file or opens an existing file?

Question

FILE *file = NULL;
errno_t err = 0;
err = fopen(&file, "test.txt", "ab+");

Now I need to know if test.txt already existed & opened or just newly created. It's because I have to do something only if it is a newly created but do nothing when it is an existing one.

Is this possible?

score 0 · Answer 1 · answered Mar 25 '23 at 11:29

0

before your fopen you can check if it exists: answer found there on StackOverflow

answered Mar 25 '23 at 11:29

Xavier B.

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how to know if fopen creates a new file or opens an existing file?

1 Answers1