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{{Infobox programming language
| name = PL/I
| logo =
| paradigm = [[过程式编程|过程式]], [[指令式编程|指令式]], [[结构化编程|结构化]]
| year = {{start date and age|1964}}
| designer = [[IBM]]与{{tsl|en|SHARE (computing)|SHARE (计算)|SHARE}}语言发展委员会
| developer = [[IBM]]
| latest release version = IBM Enterprise PL/I for z/OS 5.3<ref>{{cite web |last1= IBM Corporation |title= IBM Enterprise PL/I for z/OS, V5.3 |url= https://www-01.ibm.com/common/ssi/ShowDoc.wss?docURL=/common/ssi/rep_ca/2/899/ENUSLP19-0482/index.html&request_locale=en |website= IBM |access-date= October 1, 2019 |archive-date= 2020-07-28 |archive-url= https://web.archive.org/web/20200728071738/https://www-01.ibm.com/common/ssi/ShowDoc.wss?docURL=%2Fcommon%2Fssi%2Frep_ca%2F2%2F899%2FENUSLP19-0482%2Findex.html&request_locale=en }}</ref>
| latest release date = {{start date and age|September 2019}}
| typing =
| implementations =
| dialects = {{tsl|en|PL/M|}}, {{tsl|en|XPL|}}, {{tsl|en|PL/P|}}, {{tsl|en|PL/C|}}, {{tsl|en|IBM PL/S||PL/S}}, {{tsl|en|PL/AS|}}, {{tsl|en|PL/X|}}, {{le|PL/8}}, EPL<ref name="MulticsPL1">{{cite web|url=http://www.multicians.org/pl1-raf.html|title=The Multics PL/1 Compiler|author=R. A. Frieburghouse|website=Multicians.org|access-date=2023-01-26|archive-date=2023-02-23|archive-url=https://web.archive.org/web/20230223033409/https://multicians.org/pl1-raf.html|dead-url=no}}</ref>
| influenced_by = [[COBOL]], [[Fortran]], [[ALGOL]]
| influenced = {{tsl|en|SP/k|}}, [[B语言]], [[REXX]], {{tsl|en|AS/400 Control Language|AS/400控制语言}}
| wikibooks = PL/I
}}
'''PL/I'''（{{IPAc-en|p|iː|_|ɛ|l|_|w|ʌ|n}}），源自'''編程語言一号'''（{{lang|en|Programming Language One}}）的縮寫，一種[[过程式编程|过程式]]、[[指令式編程|指令式]][[程式語言]]。由[[IBM]]公司在1960年代发明的第三代高级编程语言，用于IBM的{{tsl|en|MVS|}}、或[[迪吉多]]的[[VAX/VMS]]等[[操作系统]]中。
在系统软件，图像，仿真，文字处理，网络，商业软件等领域均可应用。

==样例代码==

===Hello world程序===
<syntaxhighlight lang="rexx">
Hello2: proc options(main);
put list ('Hello, world!');
end Hello2;
</syntaxhighlight>

===查找字符串===
<syntaxhighlight lang="rexx">
/* Read in a line, which contains a string,
/* and then print every subsequent line that contains that string. */

find_strings: procedure options (main);
declare pattern character (100) varying;
declare line character (100) varying;
declare line_no fixed binary;

on endfile (sysin) stop;

get edit (pattern) (L);
line_no = 1;
do forever;
get edit (line) (L);
if index(line, pattern) > 0 then
put skip list (line_no, line);
line_no = line_no + 1;
end;

end find_strings;
</syntaxhighlight>

==引用==
{{reflist}}

== 外部連結 ==
{{wikibooks}}
* [https://web.archive.org/web/20021206103323/http://www.kednos.com/ Kednos PL/I] for [[Hewlett-Packard|HP]] [[OpenVMS]] [[VAX]] and [[DEC Alpha|Alpha]]
* [https://web.archive.org/web/20080622220338/http://www-306.ibm.com/software/awdtools/pli/ IBM PL/I] for [[IBM大型主機]]，{{tsl|en|Linux on zSeries|}} and [[Microsoft Windows|Windows]]
* [https://web.archive.org/web/20080304153614/http://www.users.bigpond.com/robin_v/resource.htm PL/I Resources]
* [https://archive.today/20060311035331/http://home.nycap.rr.com/pflass/pli.htm PL/I home]
* [https://web.archive.org/web/20080222150421/http://www.users.bigpond.com/robin_v/pli-n9.htm PL/I newsletter] April 2006
* [http://www.uni-muenster.de/ZIV/Mitarbeiter/EberhardSturm/PL1andC.html/ Power vs. Adventure - PL/I and C]{{Wayback|url=http://www.uni-muenster.de/ZIV/Mitarbeiter/EberhardSturm/PL1andC.html/ |date=20080518164859 }} A side-by-side comparison of PL/I and [[C语言|C]]。
* [http://pl1gcc.sourceforge.net/ PL/I for GCC]{{Wayback|url=http://pl1gcc.sourceforge.net/ |date=20080218073621 }} The pl1gcc project is an attempt to create a native PL/I compiler using the GNU Compiler Collection.
* [https://archive.today/20060311035711/http://home.nycap.rr.com/pflass/relate.htm Languages Related to PL/I]
* [https://web.archive.org/web/20071228062555/http://www.kednos.com/docs.html Kednos PL/I for OpenVMS Compiler Documentation]
* [http://www.cs.vu.nl/grammars/browsable/os-pli-v2r3/ PL/I grammar]{{Wayback|url=http://www.cs.vu.nl/grammars/browsable/os-pli-v2r3/ |date=20080520051643 }}

{{程序设计语言|PL/I}}

[[Category:程序设计语言]]

PL/I - 版本历史

imported>ExultantEditor 来自 2025年12月26日 (五) 15:34