I came across the rewind() function in C. I went through its description and example from here.
The description mentioned the following about the function:
The C library function
void rewind(FILE *stream)sets the file position to the beginning of the file of the given stream.
I really didn't get the idea clear yet. Can we imagine it as a cursor moving in the file to be read, and rewind() simply sets that cursor to the beginning of the file?
From the man page:
The rewind() function sets the file position indicator for the stream pointed to by stream to the beginning of the file. It is equivalent to:
(void)fseek(stream, 0L, SEEK_SET)except that the error indicator for the stream is also cleared (see
clearerr(3)).
So the next time you read from a file after calling rewind, you start reading from the beginning. So your cursor analogy is a valid one.