Fseek versus rewind?

Question

I noticed two methods to return to the beginning of the file

FILE *fp = fopen("test.bin", "r") fseek(fp, 0, SEEK_END); rewind(fp); 

and

 FILE *fp = fopen("test.bin", "r") fseek(fp, 0, SEEK_END); fseek(fp, 0, SEEK_SET); 

What is the difference between these methods?

Answer 1

Basically, these are two different ways to do the same thing: set the pointer to the beginning of the file. The only difference is that rewind also clears the error indicator.

If you need a choice, you should use fseek . This is because rewind does not return an integer indicating whether the operation succeeded.

Answer 2

If fseek() returns success, it will also clear the end-of-file indicator, whereas rewind() does not.