rewind() - I/O Function
How is rewind() used in C++?
is an I/O function that rewinds the file position indicator to the start of the specified stream. This function clears the EOF and the error flags associated with the stream.
void rewind ( FILE * stream );
FILE * re= fopen ("vowels.txt","w+");
fprintf( re, "%d %d", a, b);
rewind( re );
fscanf( re, "%d %d", &a, &b );
printf( "The values read are: %d and %d\n", a, b );
The values read are: 22 and 33.
In the above example the rewind() is used to read the information printed into a file by moving the pointer to start of the stream.