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From: rosen@fornax.UUCP (Wilf Rosen)
Newsgroups: comp.lang.c,comp.os.msdos.programmer
Subject: Turbo C printf problem
Message-ID: <1168@fornax.UUCP>
Date: 29 Aug 90 07:18:06 GMT
Organization: School of Computing Science, SFU, Burnaby, B.C. Canada
Lines: 23


This evening I have encountered some inexplicable (to me) behavior
from the Borland Turbo C++ compiler.  a 25MHz 386 clone that I sometimes
use the printf function will not correctly format float variables.
For example, the following program
 
#include <stdio.h>
void main()
{
  float f=1.234;
  printf("f=%f",f);
}

displays the f= text, but prints a long string orandom digits following
the '='. Since the program is simple enough that I believe I have it right,
I am concerned that I have made some error in some compiler or envoronment 
option. The unusual behavior happens only with floating point data, and only
on this machine. I have not been able to find anything in the rather voluminous
Borland documentation or help files which sheds light on thiproblem. Any 
suggestions would be greatly appreciated. 
(The system is a 25MHz 386 Legend AT clone w/AMI BIOS, running DOS 3).
Thanks very much.
  Wilf Rosenbaum