Ch (computer programming): Difference between revisions

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{{Multiple issues|COI = May 2011|confusing = June 2011}}

{{Infobox software

| name = =CH C/C++ Interpreter Chinterpreter

| logo = =

| screenshot = =

| caption = =

| author = Harry H. Cheng

| developer = SoftIntegration, Inc.

| programming language = [[C (programming language)|C]]

| released = {{Start date and age|2001|10|01}}

| latest release version = 7.0

| latest release date version = {{Start date and age|2012|02|02}}8.0.0

| released latest release date = {{ Start date and age| Oct 01, 2001 2017|11|19}}

| status =

| operating system = [[Microsoft Windows]], [[Mac OS X]], [[Linux]], [[AIX (operating system)|AIX]], [[HP-UX]], [[Solaris (operating system)|Solaris]] (SPARC and X86), [[Qnx|QNX]], [[FreeBSD]]

| programming language = [[C (programming = Englishlanguage)|C]]

| operating system = [[Microsoft Windows|Windows]], [[Mac OS X]], [[Linux]], [[IBM AIX (operating system)|AIX]], [[HP-UX]], [[Solaris (operating system)|Solaris]] (SPARC and X86x86), [[Qnx|QNX]], [[FreeBSD]]

| genre = [[Integrated development environment]]

| platform = [[x86]], [[SPARC]]

| license = [[Proprietary software]]<br/>'''Standard edition:''' [[Freeware]]<br />'''Student edition:''' [[Freeware]] for Students<br />'''Professional edition:''' [[Trialware]] for 30 days

| size =

| website = {{url|http://www.softintegration.com}}

| language = English

| genre = [[Integrated development environment]]

| license = [[Proprietary software]]<br/>'''Standard edition:''' [[Freewarefreeware]]<br />'''Student edition:''' [[Freewarefreeware]] for Studentsstudents<br />'''Professional edition:''' [[Trialwaretrialware]] for 30 days

| website = {{urlURL|http://www.softintegration.com}}

}}

'''ChCH''' {{IPAc-en|ˌ|s|iː|ˈ|eɪ|tʃ}} is a proprietary [[cross-platform]] [[C (programming language)|C]] and [[C++]] [[Interpreter (computing)|interpreter]] originallyand [[scripting language environment]]. It was designed by '''Harry H. Cheng''' as a scripting language for beginners to learn [[mathematics]], computing, [[numericnumerical methodanalysis]]s (numeric methods), and programming in C/C++. Ch is now developed and marketed by '''SoftIntegration, Inc'''.. AFree versions include the student edition, isand freelythe availablenon-commercial Professional Edition for [[Raspberry Pi]].

CH can be embedded in C and C++ application programs. It has [[numerical computing]] and graphical plotting features. ChCH is a combined of both '''shell and IDE'''.<ref>{{cite journal | last = Veeraraghavan | first = Sriranga | year = 2013 | title = An introduction to Ch: Implementing a temperature converter in Ch | url = http://www.techworld.com.au/article/452524/an_introduction_ch_implementing_temperature_converter_ch/ | publisher = ComputerWorld}}</ref> ChCH shell combines the features of common shell and C language.<ref>[http://www.softintegration.com/docs/ch/shell/ Ch Shell]</ref> ChIDE provides quick [[code navigation]] and symbolic debugging. It is based on embedded ChCH, [[SciTE|Scite]], and [[Scintilla (software)|Scintilla]].<ref>[http://www.softintegration.com/docs/ch/chide/ Ch IDE]</ref><ref>{{cite journal | last = Wang | first = Gary | year = 2002 | title = Ch Solves Portability Headaches |journal= urlIEEE Spectrum |volume= http://ieeexplore.ieee39 |issue= 6 |pages= 59 |doi= 10.org1109/xpl/freeabs_allMSPEC.2002.jsp?arnumber=1049264 | publisher s2cid= IEEE32477309 Spectrum}}</ref>

Ch can be embedded into the C/C++ application programs.

It has numerical computing and graphical plotting features. Ch is a combined shell and IDE.<ref>{{cite journal | last = Veeraraghavan | first = Sriranga | year = 2013 | title = An introduction to Ch: Implementing a temperature converter in Ch | url = http://www.techworld.com.au/article/452524/an_introduction_ch_implementing_temperature_converter_ch/ | publisher = ComputerWorld}}</ref> Ch shell combines the features of common shell and C language.<ref>[http://www.softintegration.com/docs/ch/shell/ Ch Shell]</ref> ChIDE provides quick [[code navigation]] and symbolic debugging. It is based on embedded Ch, Scite and Scintilla.<ref>[http://www.softintegration.com/docs/ch/chide/ Ch IDE]</ref><ref>{{cite journal | last = Wang | first = Gary | year = 2002 | title = Ch Solves Portability Headaches | url = http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=1049264 | publisher = IEEE Spectrum}}</ref>

ChCH is written in C and runs underon [[Microsoft Windows|Windows]], [[Linux]], [[Mac OS XmacOS]], [[FreeBSD]], [[IBM AIX|AIX]], [[Solaris (operating system)|Solaris]], [[QNX]], and [[HP-UX]]. It supports [[C90 (C version)|C90]] and major [[C99]] features, but it does not support the full set of C++ features. C99 complex number, [[IEEE- 754]] floating-point arithmetic, and [[variable-length array]] features were supported in ChCH before they became part of the [[C99]] standard.<ref>{{cite journal | last = Cheng | first = Harry | year = 1993 | title = Handling of Complex Numbers in the Ch Programming Language | pages = 76–106 | url = http://iospress.metapress.com/content/xml874m51x1w42w0/|journal=Scientific Programming}}</ref><ref>{{cite journal | last = Cheng | first = Harry | year = 1993 | title = Scientific Computing in the Ch Programming Language | pages = 49–75 | url = http://iospress.metapress.com/content/f225771541203807/ | publisher = Scientific Programming}}</ref><ref>{{cite journal | last = Cheng | first = Harry | year = 1995 | title = Extending C and FORTRAN for Design Automation | pages = 390–395 | url = http://scitation.aip.org/getabs/servlet/GetabsServlet?prog=normal&id=JMDEDB000117000003000390000001&idtype=cvips&gifs=yes&ref=no | publisher = ASME Trans., Journal of Mechanical Design}}</ref><ref>{{cite journal | last = Cheng | first = Harry | year = 1995 | title = Extending C with arrays of variable length | pages = 375–406 | url = http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6TYV-3Y6PCHF-V&_user=10&_coverDate=09%2F15%2F1995&_alid=1737140035&_rdoc=1&_fmt=high&_orig=search&_origin=search&_zone=rslt_list_item&_cdi=5628&_sort=r&_st=13&_docanchor=&view=c&_ct=1&_acct=C000050221&_version=1&_urlVersion=0&_userid=10&md5=1369ffa56fdef3033135fa8fc1eb4c15&searchtype=a | publisher = Computer Standards & Interfaces | doi=10.1016/0920-5489(95)00007-H | journal = Computer Standards & Interfaces | volume = 17 | issue = 4}}{{dead link|date=March 2019|bot=medic}}{{cbignore|bot=medic}}</ref> An article published by ''Computer Reseller News'' ([[CRN Magazine|CRN]]) named ChCH as notable among C-based virtual machines for its functionality and the availability of third-party libraries.<ref>{{cite journal | last= Morejon | first=Mario | year = 2006 |title= Ch Language Rivals Java Functionality | url= http://www.crn.com/reviews/applications-os/175804126/ch-language-rivals-java-functionality.htm | publisher = CRN}}</ref>

CH has many tool kits that extend its functions. For example, the CH Mechanism Toolkit is used for design and analysis of commonly used mechanisms such as [[four-bar linkage]], [[five-bar linkage]], [[six-bar linkage]], crank-slider mechanism, and cam-follower system.<ref>{{cite journal |last= Cheng |first= Harry |year= 2006 |title= Object-Oriented Interactive Mechanism Design and Analysis |journal= Engineering with Computers |volume= 21 |issue= 3 |pages= 237–246 |doi= 10.1007/s00366-005-0008-4 |s2cid= 16996625 }}</ref> CH Control System Toolkit is used for the design, analysis, and modelling of continuous-time or discrete-time linear time-invariant (LTI) control systems.<ref>{{cite journal |last= Zhu |first= Yong |year= 2003 |title= An Object-Based Software Package for Interactive Control System Design and Analysis |journal= Journal of Computing and Information Science in Engineering |volume= 3 |issue= 4 |pages= 366–367 |doi= 10.1115/1.1630815 |s2cid= 17908643 }}</ref> Both tool kits include the [[source code]].

Ch is now used and integrated into curriculum by many universities and high schools for learning computing and programming in C/C++.<ref>{{cite journal | last = Cheng | first = Harry | year = 2009 | title = C for the Course | pages = 50–52 | url = http://memagazine.asme.org/Articles/2009/september/C_Course.cfm | publisher = ASME Mechanical Engineering Magazine}}</ref><ref>{{cite journal | last = Huber | first = Tom | year = 2010 | title = An Introduction to C and Ch: Your One-Stop Shop for Scientific Computing | url = http://www.computer.org/portal/web/csdl/doi/10.1109/MCSE.2010.82 | publisher = IEEE Computing in Science and Engineering | doi=10.1109/MCSE.2010.82 | journal = Computing in Science & Engineering | volume = 12 | issue = 4 | page = 7}}</ref><ref>{{cite journal|last1=Liu|first1=Li | last2 = Wang | first2 = Zhaoqing|last3=Jiang | first3 = Xusheng | year = 2010 | title = Anchor-based programming teaching embedded with Ch platform | pages = 49–52 | url = http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5552033 | publisher = Mechatronics and Embedded Systems and Applications (MESA), IEEE/ASME International Conference }}</ref><ref>{{cite journal|last1=Furman|first1=B. | last2 = Wertz | first2 = E. | year = 2010 | title = A first course in computer programming for mechanical engineers | pages = 70–75 | url = http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?reload=true&arnumber=5552091 | publisher = Mechatronics and Embedded Systems and Applications (MESA), IEEE/ASME International Conference }}</ref><ref>{{cite journal|last1=ZHUANG |first1=Hong| last2 = WANG | first2 = Zhao-qing | year = 2009 | title = Experience of Using Ch for Teaching Computer Programming in C | pages = TP311.11–4 | url = http://en.cnki.com.cn/Article_en/CJFDTOTAL-JYJS200907016.htm | publisher = Computer Education | id={{CNKI|CKNI:SUN:JYJS.0.2009-07-016}}}}</ref><ref>{{cite journal|last1=WANG|first1=RONG| year = 2009 | title = Study of C Language Programming Teaching Method on platform Ch| pages = TP312.1–4 | url = http://en.cnki.com.cn/Article_en/CJFDTOTAL-WOLF200905018.htm | publisher = Journal of Weinan Teachers University | id={{CNKI|CNKI:SUN:WOLF.0.2009-05-018}} }}</ref>

CH has been integrated into [[free C-STEM Studio,]] a platform for learning computing, science, technology, engineering, and mathematics (C-STEM) with robotics. C-STEM Studio is developed by the UC Davis Center for Integrated Computing and STEM Education, offering a curriculum for K-12 students.

== Features ==

CH supports [[Lego Mindstorms NXT|LEGO Mindstorms NXT]] and [[Lego Mindstorms EV3|EV3]], [[Arduino]], Linkbot, Finch Robot, RoboTalk and Raspberry Pi, Pi Zero, and ARM for robot programming and learning.<ref>

[http://www.newtonium.com/public_html/Products/RoboWorks/chrobotalk.htm ch robot]</ref><ref>

[http://www.finchrobot.com/software/ch ch finch]</ref><ref>[http://www.softintegration.com/company/press/ch_arm_raspberry_pi_released.htm ch raspberry and arm]{{Dead link|date=June 2019 |bot=InternetArchiveBot |fix-attempted=yes }}</ref> It can also be embedded into the [[LabVIEW]] system design platform and development environment.<ref>{{Cite web|url=http://iel.ucdavis.edu/projects/chlabview/|title=Embedding a C/C++ Interpreter Ch into LabVIEW for Scripting}}</ref>

== Features ==

Ch supports the 1999 ISO C Standard (C99) and C++ classes. It is a superset of C with

CH supports the 1999 ISO C Standard (C99) and C++ classes. It is a superset of C with C++ classes. Several major features of C99 are supported, such as complex numbers, [[Variable-length array|variable length arrays]] (VLAs), IEEE- 754 floating-point arithmetic, and generic mathematical functions. The specification for wide characters in Addendum 1 for C90 is also supported.

The following C++ features are available in ChCH include:

* [[Member functionsfunction]]s

* Mixed code and declaration

* The ''[[this (computer programming)|this]]'' -> pointer

* [[Reference type (C++)|Reference type and pass-by-reference]]

* Function-style type conversion

* [[Classes in C++|Classes]]

* Private/public data and functions in classes. Ch is compatible with C++ in that by default, members of a class definition are assumed to be private until a 'public' declaration is given

* Static member of class/struct/union

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* The new and delete operators

* Constructors and destructors

* [[Polymorphic functionsfunction]]s

* The [[scope resolution operator ::]]

* The I/O functions cout, cerr, and cin with endl

* Arguments for [[variadic functionsfunction]]s are optional

ChCH supports classes in C++ with theadded followingabilities, additional capabilitiesincluding:

* Classes inside member functions

* [[Nested functionsfunction]]s with classes

* Passing member function to argument of pointer-to-function type of functions

ChCH can interact with existing C/C++ libraries and call C/C++ functions from ChCH script.<ref>{{cite journalmagazine | last = Wilson | first = Matthew | year = 2004 | title = Open-RJ and Ch | url = http://drdobbs.com/184401877?queryText=ChSDK | publisher magazine= Dr. Dobb's Journal}}</ref>

As a C/C++ interpreter, ChCH can be used as a scripting engine and extension language for applications. Pointers to arrays or variables can be passed and shared in both C-compiled and ChCH scripting contexts. One example of an embedded ChCH scripting application is Mobile-C, which has been used for collaborative visualization of distributed mesh model.<ref>{{cite journalmagazine | last = Cheng | first = Harry | year = 2009 | title = Speeding-Up Software Development Using Embedded Scripting | pages = 8–88 | url = http://drdobbs.com/architecture-and-design/212201774 | publisher magazine= Dr. Dobb's Journal}}</ref><ref>{{cite journalbook |last1=Wang |first1=Li-rong |title=2009 last2IEEE =10th BoInternational |Conference first2on =Computer-Aided Yo|last3=HagiwaraIndustrial |Design first3& =Conceptual IDesign |pages=1127–1132 title |last2= Mobile-CBo based agent management for collaborative visualization of distributed mesh model|first2= Yo| url last3=Hagiwara http://ieeexplore.ieee.org/search/freesrchabstract.jsp?tp|first3=&arnumber=5375178&queryText%3DMobile-C%26openedRefinements%3D*%26searchField%3DSearch+All I | publisher = Computer-Aided Industrial Design & Conceptual Design, 2009. CAID & CD 2009. IEEE 10th International Conference|doi=10.1109/CAIDCD.2009.5375178 |year=2009 |isbn=978-1-4244-5266-8 |s2cid=39307433 }}</ref><ref>{{cite journalbook |last1=Wang |first1=Li-rong | last2 = Bo | first2 = Yo|last3=Hagiwara | first3 = Ichiro | title = An agent based collaborative simplification of 3D mesh model |pages=325–328 |url = http://dl.acm.org/citation.cfm?id=1813032 | year=2009 | publisher = CDVE'09 Proceedings of the 6th international conference on cooperative design, visualization, and engineering|isbn=9783642042645 |series=Cdve'09 }}</ref>

ChCH has a built-in [[string type]] (string_t) for automatic memory allocation and de-allocation. It supports shell aliases, history, piping,and etcpiping.<ref>{{cite journal | last = Campbell | first = Matt | year = 2003 | title = Ch, A C/C++ Interpreter – New possibilities for people who like C and Unix | url = http://www.mactech.com/articles/mactech/Vol.19/19.09/CInterpreter/index.html | publisher = MACTECH, the journal of Apple technology}}</ref><ref>{{cite book|last=Cheng|first=Harry|title=The Ch Language Environment|edition=6.3|year=2010|publisher= SoftIntegration , Inc.|___location=Davis, CA}}</ref>

ChCH has built-in 2D/3D graphical plotting features and computational [[array data type|arrayarrays]]s for numerical computing. A 2D [[linear equation]] of the form ''b = A*x'' can be written verbatim in Ch.<ref>{{cite journal |last= Glassborow |first= Francis |year= 2001 |title= The Ch Language Environment Version 2.0 |url= http://www.softintegration.com/company/pub/accu.html |pages= 36–37 |publisher= C Vu Magazine}}</ref>

numerical computing. A 2D [[linear equation]] of the form ''b = A*x'' can be written verbatim in Ch.<ref>{{cite journal | last = Glassborow | first = Francis | year = 2001 | title = The Ch Language Environment Version 2.0 | url = http://www.softintegration.com/company/pub/accu.html | pages = 36–37 | publisher = C Vu Magazine}}</ref>

== See also ==

* [[CINT]]

* [[Pike (programming language)]]

== References ==

{{Reflist}}

== Further reading ==

* {{cite journal |last=Heller |first=Martin |year=2001 |title=The Ch Language Environment |url=http://www.byte.com/documents/s=1776/byt20011031s0002/1105_heller.html |publisher=[[Byte (magazine)|Byte]] |url-status=dead |archive-url=https://web.archive.org/web/20011116220556/http://www.byte.com/documents/s%3D1776/byt20011031s0002/1105_heller.html |archive-date=November 16, 2001 }}

* {{cite journalmagazine | last = HellerCheng | first = MartinHarry | year = 20012002 | title = TheC99 Ch& LanguageNumeric EnvironmentComputing |pages= 28–34 |url = http://replay.waybackmachine.org/20011116220556/http://www.bytedrdobbs.com/documentscpp/s=1776/byt20011031s0002/1105_heller.html184404993 | publisher magazine= ByteDr. Dobb's MagazineJournal}}

* {{cite journalmagazine | last = Cheng | first = Harry | year = 20022006 | title = C99Ch: &A NumericC/C++ Interpreter for Script Computing | pages = 28–346–12 | url = http://drdobbs.com/cpp/184404993184402054 | publisher magazine= Dr. Dobb's Journal}}

* {{cite journalbook | last = Cheng | first = Harry | year = 20062009 | title = Ch: A C/C++ InterpreterFor forEngineers Script& ComputingScientists, |An pagesInterpretive = 6–12Approach | url = http://drdobbshighered.mcgraw-hill.com/184402054sites/0073376051/ | publisher= McGraw-Hill|isbn= Dr. Dobb's Journal978-0-07-729046-7}}

* {{cite book | last = Cheng | first = Harry | year = 20092011 | title = C For Engineers & Scientists, An Interpretive Approach | url = httphttps://higheredwww.mcgraw-hillamazon.comcn/sitesC%E8%AF%AD%E8%A8%80%E7%A8%8B%E5%BA%8F%E8%AE%BE%E8%AE%A1%E6%95%99%E7%A8%8B-%E7%A8%8B%E8%BE%89/0073376051dp/B005JR8IW6/ref=sr_1_1?s=books&ie=UTF8&qid=1325463722&sr=1-1 | publisher = McGraw-HillHigher Education Press|isbn= 978-0-07-729046-7|edition= Chinese }}

* {{cite book | last = Cheng | first = Harry | year = 2011 | title = C For Engineers & Scientists (Chinese Edition) | url = http://www.amazon.cn/C%E8%AF%AD%E8%A8%80%E7%A8%8B%E5%BA%8F%E8%AE%BE%E8%AE%A1%E6%95%99%E7%A8%8B-%E7%A8%8B%E8%BE%89/dp/B005JR8IW6/ref=sr_1_1?s=books&ie=UTF8&qid=1325463722&sr=1-1 | publisher = Higher Education Press|isbn= 978-0-07-729046-7}}

== External links ==

* [http://{{Official website|www.softintegration.com/}}, SoftIntegration Home Page]

* [http://www.mobilec.org/ Mobile-C: a Multi-Agent Platform for Mobile C/C++ Agents Home Page]

* [http://c-stem.ucdavis.edu/studio/ C-STEM Studio]

{{DEFAULTSORT:Ch Interpreter}}

[[Category:C programming language family]]

[[Category:Educational programming languages]]

[[Category:Interpreters (computing)]]

[[Category:Pedagogic integrated development environments]]

[[Category:Educational programming languages]]