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From: siping@cathedral.cerc.wvu.wvnet.edu (Siping Liu)
Newsgroups: comp.lang.c
Subject: **** a simple question ****
Message-ID: <793@babcock.cerc.wvu.wvnet.edu>
Date: 14 Sep 90 21:20:00 GMT
Sender: news@cerc.wvu.wvnet.edu
Lines: 15

How can I print out ONLY the significant digits of
a float number? As you know, "%f" fills in zero's if
the number does not have enough non-zero digits after
the point.

I'd like to have:
  for 3.12, print out 3.12;
  for 3.0, print out 3.0;
  for 3.12349, print out 3.1235;  (4 digits at most after the point)

How can I do this?

Thanks for your help.

siping@cerc.wvu.wvnet.edu