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Just download the IBM RDz trial, and in it you'll find a fully functional COBOL compiler equivalent to about Enterprise Cobol V4.1(ish). Prino, did you download and test? IBM notes says COBOL compiler n/a for Windows 7. For Windows a good compiler and IDE, only Fujitsu Cobol. You can made reports with Crystal Reports or PowerForm to access direct cobol files. PowerCOBOL V5.0 conforms to COM design guidelines and implementations.
I am a graduate student majoring in Computer Science. My department teaches the majority of its courses using Java (though I did take one course on system architecture that used C to demonstrate processor scheduling, memory management, etc..but I digress). Sound blaster audigy 2 software for windows 7.
I want to learn more about COBOL, but I don't have access to a mainframe system. Can anyone please recommend a free COBOL compiler for Windows that would enable me to get through some basic COBOL tutorials?
Disclaimer: yes, I've Googled this already, so hoping for some experienced individuals to give some further info.
Thanks!
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6 Answers
Other posters have suggested Tiny COBOL, but have a look at OpenCOBOL too. OpenCOBOLis a cross compiler to C and has a fairly active development community.
COBOL is not a difficult language to learn. Unless you are tying to work your way into a mainframe shop,spending a lot of time studying COBOL may not have much career payback.
As belisarius pointed out, it is not the language as much as the environment that needs to be learned. By analogy, there isn't very much to learn about the C language either. However,just knowing C will not get you very far - you need to work with thehuge standard library that comes with it. COBOL is similar in thatrespect. The difference is that COBOL does not come with a huge standard library, it is part of a packagethat often includes: CICS, DB/2, MQ-Series and an array of other library services (LE Services in an IBM environment).
Windows 7 Cobol Compiler
COBOL can be found outside of a mainframe environment but the mainframeis its 'real home'. As a generalization, 'mainframe' implies an IBM mainframe running Z/OS (many may take exception to this statement). This publication: Introduction to the Mainframe - z/OSis a good place to get a feel for what an IBM mainframe environment is like.
The things I find characterize COBOL are:
COBOL is a procedural language. Some vendors have added OO extensionsand new COBOL language standards include OO extensions, but this is largely window dressing.COBOL is fundamentally a procedural language.
Data declaration. The
PICTURE/USAGEthing is a bit of a mind bender. Data declaration combinesinternal data representation (binary, packed decimal, floating point, character, etc.) with presentation(number of digits, leading zeros, sign, etc.) into a single declaration.REDEFINESused to provide different views of the same underlying memory.Hierarchical data declarations. Data hierarchy is defined using level numbers. Level 1 defines the top of thehierarchy and increasing numbers define lower levels. Levels 66 (in conjunction with RENAMES), 77, 88 have special meanings.
Flow of control. Many programmers (even some veteran COBOL programmers) view
SECTION/PARAGRAPHin a manner similar to a procedure call. They are completely different.SECTION/PARAGRAPHdonot follow normal stack oriented call/return semantics. COBOL uses a unique mechanism to managereturn fromPERFORMedsections/paragraphs.Monolithic programs with tons of global variables. It is not uncommon to find COBOL source files running into thousands of lines with several hundred global variables.COBOL doesn't have to be written this way - I believe this is a legacy dating back to a time whenprocedure calls were considered costly but
PERFORMingaSECTION/PARAGRAPHwas very efficient. The habitseems to have stuck and newer COBOL programs tend to be written as monolithic monsters too.String handling nightmare. COBOL does financial calculations very well. It does not dostring handling very well at all. The string handling verbs
INSPECT,STRINGandUNSTRINGcan doa number of interesting things, but manage to be quite aggravating too.COPY/REPLACINGandREPLACEcompiler directives need to be understood. They behave somewhatdifferently than file inclusion in most other languages. Most shops useCOPYonly for common record ordata declaration, others use them for common procedural code too (withREPLACINGand orREPLACE).
Given a working knowledge of C, you should be able to pick up on COBOL without much difficulty.
crowneI'll not address your specific question, since it was many years ago that I stopped working as a mainframe systems programmer (and with mainframes in general .. and that includes COBOL). Nevertheless, there are two points that I want to emphasize:
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COBOL is an easy to learn language. You'll feel at first that the syntax is daunting. A lot of 'divisions', 'sections' , 'paragraphs' .. just try to understand why they exist. Nobody writes those labels. The way COBOL uses and redefines data structures is perhaps the most interesting concept, try to understand it well.
This is the key point. I said 'COBOL is easy'. Now the bad news: being a fair mainframe COBOL programmer is NOT easy. But that has nothing to do with COBOL, it's the environment. The mainframe is big, and there are a lot of 'ecosystems' in there. You have DB2, CICS, some JCL, and VSAM as a bare minimum, and perhaps a dozen more, depending on your installation. Printers, tapes and other specialized and hard to manage hardware too. Each one of them requires several years to tame, and that's the real value of a good mainframe programmer. Microfocus had an expensive compiler/environment product that was able to emulate a few of these features, but I think it's out of market now.
Anyway, dexterity with those features are usually acquired 'on the shop' and very difficult (believe me) to get from a book or courseware.
That said, don't expect to get a mainframe job (other than a super-junior one) after learning and taming COBOL. That is just a first little step.
HTH!
Dr. belisariusDr. belisariusThere used to be a Cobol-to-C compiler and Eclipse IDE from a company called 'The Kompany'. The product was called 'Kobol'. It would let you write Cobol using an eclipse based environment that would be similar to what you would use for a mainframe (Rational Developer for Z). They have a free demo version and a cheap student version IIRC.
You will find that Cobol is easy to learn, easy to write and hard to shoot yourself in the foot with. That is one of the reasons it is so very popular with financial institutions.
I think it is great that you are adding Cobol to your toolbox.
Joe ZitzelbergerJoe ZitzelbergerCobol Compiler Windows 7
Have you tried TinyCobol? I think I used it once and it wasn't bad.
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A while back, MicroFocus had a free version of their IDE+Compiler (Net Express), but they no longer offer it. I'm pretty sure I have a copy of the installer somewhere around here, though I'm not sure that it would still be legal to install if they no longer offer the product. I can take a look later tonight (it would be on my other computer, which is currently headless and inactive) and see what I come up with.
AgentConundrumAgentConundrumTry OpenCOBOL http://www.opencobol.org/, it's free, it runs on Windows and Linux and is being actively developed.
Micro focus now offer their Personal Edition of Visual COBOL free for non-commercial use. This COBOL works with either Microsoft Visual Studio as a .Net language or Eclipse. It even comes with a lite version of Visual Studio so you don't have to buy that. You can download it from https://www.microfocus.com/product-downloads/vcpe/vcpe22/index.aspx
Windows Cobol Compiler
The open source OpenCOBOL at www.opencobol.org/ has now changed its name and location. Now called GNU Cobol it may be found at sourceforge.net/projects/open-cobol/. This is an excellent COBOL that implements a substantial part of the ANS 85 and ISO 2002 COBOL standards.
The GNU COBOL site also has a link to Gary Cutler's Programmers Guide to OpenCOBOL 1.1 which is an excellent language reference. If you are looking for learning materials you can try my COBOL tutorial at www.csis.ul.ie/cobol/course
There is also a very useful online version of COBOL that uses the OpenCOBOL compiler. It may be found at http://www.compileonline.com/compile_cobol_online.phpCheck out their overly long 'Hello world' program. In ISO 2002 COBOL the IDENTIFICATION DIVISION is not required and since the program stops when the end of the text is reached, the STOP RUN is not required either. Only the three lines shown below are actually required. Try it yourself.