Possible output field adjustment bug

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1 total messages Started by Craig Ruff Wed, 27 Jan 1993 03:17

#463

Author: Craig Ruff
Date: Wed, 27 Jan 1993 03:17

37 lines
1410 bytes

I have found a possible bug in the field adjustment operators of the stream
class.  The following program:

#include <iostream.h>

main()
{
	cout.width(4);
	cout << '(' << -12 << ")\n";

	cout.width(4);
	cout.setf(ios::left, ios::adjustfield);
	cout << '(' << -12 << ")\n";

	cout.width(4);
	cout.setf(ios::internal, ios::adjustfield);
	cout << '(' << -12 << ")\n";
}

Produces:
   (-12)
(   -12)
   (-12)

According to page 343 of Stroustrup's "The C++ Programming Language", 2nd
edition it should produce:
( -12)
(-12 )
(- 12)

The width function should apply to the next numeric or string output
operation, not to characters.  Now, to me, it would seem that symmetric
operation of the field adjustments are desirable.  Is this the intent
of the libg++ versions?
Craig Ruff      	NCAR			cruff@ncar.ucar.edu
(303) 497-1211  	P.O. Box 3000
			Boulder, CO  80307

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