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BCPL    
(Basic CPL) A British systems language developed by
Richards in 1969 and descended from {CPL} (Combined
Programming Language). BCPL is low-level, typeless and
block-structured, and provides only one-dimensional {arrays}.
Case is not significant, but conventionally reserved words
begin with a capital. Flow control constructs include:
If-Then, Test-Then-Else, Unless-Do, While-Do, Until-Do,
Repeat, Repeatwhile, Repeatuntil, For-to-By-Do, Loop, Break
and Switchon-Into-Case-Default-Endcase. BCPL has conditional
expressions, pointers, and manifest constants. It has both
procedures: 'Let foo(bar) Be command' and functions: 'Let
foo(bar) = expression'. 'Valof $(..Resultis..$)' causes a
compound command to produce a value. Parameters are
{call-by-value}.

Program segments communicate via the global vector where
system and user variables are stored in fixed numerical
locations in a single array.

The first BCPL {compiler} was written in {AED}. BCPL was used
to implement the {TRIPOS} {operating system}, which was
subsequently reincarnated as {AmigaDOS}.

["BCPL - The Language and its Compiler", Martin Richards &
Colin Whitby-Stevens, Cambridge U Press 1979].

See {OCODE}, {INTCODE}.

Oxford BCPL differed slightly: Test-Ifso-Ifnot, and section
brackets in place of $( $).

The original {INTCODE} {interpreter} for BCPL is available for
{Amiga}, {Unix}, {MS-DOS}
{(ftp://wuarchive.wustl.edu/systems/amiga/programming/languages/BCPL/)}.

A BCPL compiler {bootstrap} kit with an {INTCODE}
{interpreter} in {C} was written by Ken Yap
.

(1995-03-26)

Basic / BBN Combined Programming Language (BBN)


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  • FAQs - Ask a Question
    Text BCPL at 4109410418 Text BCPL at 4109410418 Call a BCPL branch Call a BCPL branch
  • How to fix CloudLibrary Issues - Ask a Question
    Use a different, up-to-date web browser to access BCPL's CloudLibrary website If you are using Edge or Chrome then use Firefox If you do not have Firefox then install it here If a different web browser works, then your other browser needs to have the cache cleared before you can access CloudLibrary again in that browser Mobile Device Users:
  • Q. How do I read the Baltimore Banner online using my library card?
    On the Limited Time Banner Pass screen, enter "BCPL" in the promo code field Click the Apply link, which is next to the Promo code field Click the Complete button, then click the Continue button Troubleshooting Login problems or if you hit a paywall Computer users - Check your web browser for updates
  • What are your branch hours and locations? - Ask a Question - LibAnswers
    To find BCPL branch hours, phone numbers, and locations, go to the Locations area at the top of our home page Deaf or hearing or speech impaired customers and TTY users can reach us through Maryland Relay
  • Q. How do I read the Washington Post online using my library card?
    Then try again to access the Post via BCPL's Research Databases page or Digital Library page Mobile Device with Mobile App Users: Try using a full web browser and log into your Washington Post account via BCPL's Research Databases page or Digital Library page If you can log in but the problem persists with the WP mobile app, try changing your
  • Q. How do I get e-books on my mobile device? - LibAnswers
    Open the Libby app and follow the prompts to sign in with your Baltimore County Public Library card number and PIN When asked for your library system, it's best to spell out Baltimore County Public Library instead of entering "BCPL", a zip code, the name of your city or letting the app guess your library
  • Q. How do I return downloadable e-books and e-audiobooks? - LibAnswers
    From BCPL's Cloud Library website -- log into your Cloud Library account and click the My Books tab Next to the title you want to return, click the 3 dots icon (as shown in the image below) then select Return From the CloudLibrary app on your mobile device -- open the CL app, tap My Books then tap the 3 dots icon, now tap Return
  • How do I place a hold online? - Ask a Question - bcpl. libanswers. com
    Enter your BCPL library card number (barcode) without any spaces and your library PIN password The default PIN is set to the the last four numbers in your phone number until unless you change it Select the branch where you want to pick up the item Click Submit Request button at the bottom of the screen
  • How do I read the Wall Street Journal online using my library card . . .
    Go to BCPL's home page at www bcpl info; Select the Books and More tab Select Digital Library from the drop down menu Scroll down a bit and select the Wall Street Journal link, it's in the 4th tile, under the heading 'Magazines, Newspapers Comics' You should land on a BCPL page that says "Enjoy Free Access to the Wall Street Journal"
  • Q. cloudLibrary and Windows Computers: The Basics - LibAnswers
    Go to BCPL's CloudLibrary website and login with your library card number and library PIN password Note: Library account usernames will not work with the CloudLibrary website Select a book and borrow it, then click Read





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