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Useful links

Here is some information on software that might be useful to the IOI community.

Linux: Linux is a free Unix-type operating system originally created by Linus Torvalds with the assistance of developers around the world. Developed under the GNU General Public License [copy at the Free Software Foundation], the source code for Linux is freely available to everyone.
Execution Limits: Linux and the IOI
Unix on Windows [original article]: These packages are a good aid for practicing in a Linux-like environment on a regular Windows PC.
- Cygwin: The free Cygwin tools are ports of the popular GNU development tools and utilities for Windows 95, 98, and NT.
- UWIN: ("UNIX for Windows") was developed by David Korn, and is owned by AT&T laboratories. Binaries are freely available if you want to use it for educational, research and evaluation purposes.
Another way to run Linux on a regular (Windows) PC is to boot from a Knoppix CD, for example, NIOde (NIO Development Environment), which also contains all appropriate IOI programming tools.
DJGPP: a free 32-bit C/C++ development system for Intel 80386 (and higher) PCs running DOS.
- DJGPP
GCC: GNU Compiler Collection currently contains front ends for C, C++, Objective-C, Fortran, Java, and Ada, as well as libraries for these languages (libstdc++, libgcj,...). Further frontends are available.
- GCC Home Page
FreePascal: (also known as FPK Pascal) is a free 32-bit Pascal compiler. It is available for different processors (i386+ and 680x0) and operating systems (Linux, DOS, AmigaOS, OS/2, Win32).
(The download page of the FreePascal website contains a link for RHIDE, a free Borland-like IDE, configured for use with FreePascal. Note: FreePascal includes its own IDE, called FP; see PDF version of User's Guide)
- FreePascal (documentation for immediate browsing; many other formats available and included in download package)
- Another link for FreePascal: FPK Pascal.
GNU Pascal: A free and very complete 32/64-bit Pascal compiler for various platforms, supporting cross-compilation.
- GNU Pascal (documentation for immediate browsing)
- Using and Porting GNU Pascal
RHIDE: Robert Höhne's (free) Integrated Development Environment for use with DJGPP, FreePascal, and GNU Pascal.
- Current RHIDE Home Page maintained by Andris Pavenis.
  rhide-1.4.7.8 - latest version (October/November 2000, local copies):
- Original RHIDE Home Page by its developer. (documentation for immediate browsing; other formats available)
- Archived RHIDE mailing list
- RHIDE download links on FreePascal site. You may wish to access one of the FPC mirror sites.
PENG: a portable Integrated Development Environment (with DOS and Linux versions) written in GNU Pascal by Frank Heckenbach.
- PENG Home Page
FPK Pascal and GNU Pascal: a comparison
Report on free compilers by Rob Kolstad

Software to Process Survey Data

The program procenq.pas was used to process the data of the surveys held at IOI2000 and IOI2001. Further information about procenq.pas.

RobIn: Turbo Pascal Unit for Robust Input

RobIn makes it easy to develop robust checkers for the format of input and ouput files. Currently, in version 0.3 (beta), not officially released.

My talk about RobIn at CEOI2000
RobIn.zip: complete zip archive
README.TXT: readme file
Doc.txt: current documentation
Directory with all the stuff

Old Links

TpPatch (MISSING) by Klaus Hartnegg to repair TP7-generated executables that suffer from the "Divide by Zero" bug (when using the Crt Unit). Some additional links (because I always forget where to look):