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Date: Thu, 07 Feb 2002 14:58:12 -0500
To: "Michael Wirta" <michaelwirta AT satx DOT rr DOT com>, <cygwin AT cygwin DOT com>
From: "Larry Hall (RFK Partners, Inc)" <lhall AT rfk DOT com>
Subject: Re: Problem with scanf and float under Cygwin on Windows ME
  Operating System
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At 02:49 PM 2/7/2002, Michael Wirta wrote:
>I have been having a problem with scanf and floating point numbers in Cygwin
>on a WindowsME machine.  I have run this same program under Linux and have
>had no problems with it. As soon as the float number is entered the program
>terminates abnormally.  The error message says there is a "Segmentation
>Fault : Probably a corrupted stack." The program I used is below, followed
>by the core dump file produced when the program is run. Note: I have not had
>any problems with scanf using strings or integers, only floating point
>numbers.  I saw others mention this problem in the Cygwin mailing list
>archive, and someone reported that this bug had been fixed. However, I have
>the latest version of Cygwin installed, with the gcc that is included with
>the installation.  Anyone have any suggestions?


Yes.  Fix your program as indicated below.


>#include <stdio.h>
>
>int main(void)
>{
>float a = 1;
>
>printf("number a is %f \n",a);
>scanf("===>%f",a);


Replace this with:

scanf("===>%f",&a);


>printf("new number is %f \n",a);
>exit(0);
>}






Larry Hall                              lhall AT rfk DOT com
RFK Partners, Inc.                      http://www.rfk.com
838 Washington Street                   (508) 893-9779 - RFK Office
Holliston, MA 01746                     (508) 893-9889 - FAX


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