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*From*: Cynthia Randles <crandles at Princeton dot EDU>*To*: cygwin at cygwin dot com*Date*: Wed, 28 Aug 2002 16:08:51 -0400*Subject*: Re: cygwin gcc and arrays -- Possible bug???*Organization*: Princeton University*References*: <Pine.GSO.4.44.0208272037460.26315-100000@slinky.cs.nyu.edu>

Dear Igor: Igor Pechtchanski wrote: > > Which version of gcc are you using? Well, since I just downloaded cygwin last week, I assume I have the latest version of gcc. I think it is gcc-2.95. Which libraries are you linking in? #include <stdio.h> #include <math.h> > How are you allocating/declaring rad_array and vol_array? #define NUMBINS (51 - 1) float rad_array[NUMBINS], vol_array[NUMBINS]; >Is this a C or C++ program? C Please also check your loop limits - are you sure you wanted > a '<=' there, rather than a '<'? Yes. When I compile it with gcc on another machine, I get the right results. If you have any ideas, please let me know. Thanks for your help. Cynthia > > On Tue, 27 Aug 2002, Cynthia Randles wrote: > > > I was wondering if anyone could help me. > > I have the following lines of code: > > > > for (i = 0; i <= NUMBINS; ++i) > > { > > printf("--------read in input files---------\n"); > > printf("The value if i is %d\n", i); > > fscanf(ifp1, "%f\n", &radius_microns); > > fscanf(ifp2, "%f\n", &volfraction); > > printf("The value of radius is %f\n", radius_microns); > > rad_array[i]= radius_microns; > > > > printf("The radius is rad_array[%d]=%f\n\n",i, rad_array[i]); > > > > printf("The value of volfraction is %f\n", volfraction); > > vol_array[i] = volfraction; > > printf("The volfraction is vol_array[%d]=%f\n", i, vol_array[i]); > > printf("The value of rad_array[%i] is %f\n", i, rad_array[i]); > > printf("----------end of read in input file------\n\n"); > > } > > > > which, in cygwin produces: > > > > --------read in input files--------- > > The value of i is 0 > > The value of radius is 0.200000 > > The radius is rad_array[0] = 0.200000 > > > > The value of volfraction is 0.330000 > > The volfraction is vol_array[0]=0.330000 > > The value of rad_array[0] is 0.330000 > > ----------end of read in input file----- > > > > as you can see, for some reason rad_array[0] is being reassigned even > > though I never ask for that!!! > > > > my red-hat linux gcc produces: > > > > --------read in input files--------- > > The value of i is 0 > > The value of radius is 0.200000 > > The radius is rad_array[0] = 0.200000 > > > > The value of volfraction is 0.330000 > > The volfraction is vol_array[0]=0.330000 > > The value of rad_array[0] is 0.200000 > > ----------end of read in input file----- > > > > which is the right answer. I cannot figure out what is going > > on with cygwin, and I haven't found a post that can help me. Any > > help is appreciated. > > > > Thanks, > > Cynthia > > -- > http://cs.nyu.edu/~pechtcha/ > |\ _,,,---,,_ pechtcha@cs.nyu.edu > ZZZzz /,`.-'`' -. ;-;;,_ igor@watson.ibm.com > |,4- ) )-,_. ,\ ( `'-' Igor Pechtchanski > '---''(_/--' `-'\_) fL a.k.a JaguaR-R-R-r-r-r-.-.-. Meow! > > It took the computational power of three Commodore 64s to fly to the moon. > It takes a 486 to run Windows 95. Something is wrong here. -- SC sig file -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Bug reporting: http://cygwin.com/bugs.html Documentation: http://cygwin.com/docs.html FAQ: http://cygwin.com/faq/

**Follow-Ups**:**Re: cygwin gcc and arrays -- Possible bug???***From:*Igor Pechtchanski

**References**:**Re: cygwin gcc and arrays -- Possible bug???***From:*Igor Pechtchanski

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