NetNews Usenet Archive 1993 #1/NN_1993_1.iso/spool/comp/lang/cplus/18857

Text File | 1993-01-08 | 1.7 KB | 52 lines

Newsgroups: comp.lang.c++
Path: sparky!uunet!psinntp!dg-rtp!webo!bhaskara.webo.dg.com!pramesh
From: [e-mail] (Ramesh Babu)
Subject: Re: How to limit string output length w/ stream manips?
Sender: [e-mail] (Usenet Administration)
Message-ID: <[e-mail]>
Date: Fri, 8 Jan 93 21:12:51 GMT
Reply-To: [e-mail]
References: <[e-mail]> <[e-mail]>
Organization: NSDD, Data General Corp.
Lines: 39

In article <[e-mail]>, [e-mail] (Steve Clamage) writes:
|> [e-mail] (Jon K. Salmon) writes:
|>
|>
|> >I would like to limit the output length of a string sent to an
|> >output stream.  For example, given a string...
|>
|> >  const char *Bob = "1234567890ABCDEF";
|>
|> > ... to output "12345"?
|>
|> As with printf(), the iostream inserters never truncate a value; output
|> width is a minimum, not an absolute.
|>
|> If you want to truncate a string, you have to do the truncation yourself.
|> --
|>
|> Steve Clamage, TauMetric Corp, [e-mail]

In C printf with a format string, the above functionality can be
implemented. Refer to pg 153 of K&R 2nd edition.

Example:

      printf ( "%2.2s\n", "ABCD" );

will output just

      AB
in "%2.2" the first 2 specifies the min length and the second 2
the max length. The first 2 can be omitted then the format string
becomes "%.2" will have the same desired results.

***********************************************************************
Ramesh babu P                   [e-mail]
Data General Corp.
Westboro, Ma (508)-870-8048      Fax [phone]
***********************************************************************