Increment file pointer

[bd]

No, one byte beyond it. Look:

FILE *p;

|current FILE object|
|sizeof(FILE) bytes |
+-+-+-+-+-+-+~~~~-+-+-+-+~~~~~~
^ ^
p before ... and after increment.

Regards

Ah, I read it as one byte beyond the *start* of the current FILE object...

 

[Barry Schwarz]

Ah, I read it as one byte beyond the *start* of the current FILE object...

No, it is one byte beyond the ***end*** of the current FILE object.
Unless sizeof(FILE) is 1, these are not the same.

Consider an array of FILE objects and a FILE*.

FILE files[5];
FILE *ptr;
ptrdiff_t diff;
ptr = files;

ptr obviously points to files[0].

ptr++;

Just as obviously, ptr now points to files[1]. Like all arrays, the
five elements of files are consecutive in memory with no overlap and
no gaps.

diff = ptr-files;

Disregarding any type differences, the value in diff is guaranteed to
be equal to sizeof(FILE)


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