reopen cin?

[Dr Richard J. Reid]

If cin is from the keyboard, there may be more input
following the synthesized eof from the ^D.

How do you get this stream restarted?
The istream set's, unset's and clear's
don't seem to do it.

Thanks,

Dick

[Jerry Schwarz]

This is system dependent and the poster didn't indicate the
system, but cin.clear() should work. I have tested the attached
program on a UNIX system with AT&T version's of iostreams.

Jerry Schwarz
----------------------------------
#include <iostream.h>

int main()
{
for(;;) {
if ( cin.eof() ) {
cout << "EOF" << endl;
cin.clear();
}
char c ;
if ( cin.get(c) ) cout.put(c) ;
}
}

[Dr Richard J. Reid]

Jerry--

Yes, that works okay in cfront and TC++.
In g++ where the problem first arose an additional
action is required:

cin.clear();
rewind ( _iob ); // Seems quite out of place, doesn't it?
// cfront also accepts but doesn't
// require this rewind.

Dick