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ALGOL 60
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====ALGOL 60 family==== Since ALGOL 60 had no I/O facilities, there is no portable [[hello world program]] in ALGOL. The following program could (and still will) compile and run on an ALGOL implementation for a Unisys A-Series mainframe, and is a straightforward simplification of code taken from The Language Guide<ref>{{cite web |url=http://www.engin.umd.umich.edu/CIS/course.des/cis400/ |title=The ALGOL Programming Language |website=www.engin.umd.umich.edu |access-date=11 January 2022 |archive-url=https://web.archive.org/web/20100210185248/http://www.engin.umd.umich.edu/CIS/course.des/cis400/algol/algol.html |archive-date=10 February 2010 |url-status=dead}}</ref> at the [[University of Michigan]]-Dearborn Computer and Information Science Department Hello world! ALGOL Example Program page.<ref>{{cite web |url=http://www.engin.umd.umich.edu/CIS/course.des/cis400/algol/hworld.html |title=Hello world! Example Program |website=www.engin.umd.umich.edu |access-date=11 January 2022 |archive-url=https://web.archive.org/web/20100204112923/http://www.engin.umd.umich.edu/CIS/course.des/cis400/algol/hworld.html |archive-date=4 February 2010 |url-status=dead}}</ref> BEGIN FILE F(KIND=REMOTE); [[EBCDIC]] ARRAY E[0:11]; REPLACE E BY "HELLO WORLD!"; WRITE(F, *, E); END. Where * etc. represented a format specification as used in FORTRAN, e.g.<ref>[[Fortran#"Hello, World!" example]]</ref> A simpler program using an inline format: {{sxhl|2=m2|1=<nowiki/> BEGIN FILE F(KIND=REMOTE); WRITE(F, <"HELLO WORLD!">); END. }} An even simpler program using the Display statement: {{sxhl|2=m2|1= BEGIN DISPLAY("HELLO WORLD!") END.}} An alternative example, using Elliott Algol I/O is as follows. Elliott Algol used different characters for "open-string-quote" and "close-string-quote", represented here by {{color box|rgba(255,255,255,0)|border=silver| [[‘]]}} and {{color box|rgba(255,255,255,0)|border=silver| [[Single quotation mark|’]]}}. {{sxhl|2=pascal|1=<nowiki/> program HiFolks; begin print ‘Hello world’ end; }} Here's a version for the Elliott 803 Algol (A104) The standard Elliott 803 used 5-hole paper tape and thus only had upper case. The code lacked any quote characters so [[£]] (pound sign) was used for open quote and [[?]] (question mark) for close quote. Special sequences were placed in double quotes (e.g., £L?? produced a new line on the teleprinter). HIFOLKS' BEGIN PRINT £HELLO WORLD£L??' END' The [[ICT 1900 series]] Algol I/O version allowed input from paper tape or punched card. Paper tape 'full' mode allowed lower case. Output was to a line printer. Note use of '(', ')', and %.<ref>{{cite web|url=http://www.icl1900.co.uk/techpub/tp3340.djvu|title=ICL 1900 series: Algol Language|publisher=ICL Technical Publication 3340|year=1965}}</ref> 'PROGRAM' (HELLO) 'BEGIN' 'COMMENT' OPEN QUOTE IS '(', CLOSE IS ')', PRINTABLE SPACE HAS TO BE WRITTEN AS % BECAUSE SPACES ARE IGNORED; WRITE TEXT('('HELLO%WORLD')'); 'END' 'FINISH'
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