COMAL

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COMAL
Paradigm structured
Designed by Benedict Løfstedt and Børge R. Christensen
First appeared 1973
Typing discipline strong
Influenced by
BASIC, Pascal

COMAL (Common Algorithmic Language) is a computer programming language developed in Denmark by Benedict Løfstedt and Børge R. Christensen in 1973.

The "COMAL 80 PROGRAMMING LANGUAGE REPORT" contains the formal definition of the language.

Design[edit]

COMAL was created as a mixture of the prevalent educational programming languages of the time, BASIC, Pascal, and, at least in the Commodore and Compis versions, the "turtle graphics" of Logo. The language was meant to introduce structured programming elements in an environment where BASIC would normally be used.

History[edit]

In the early 1980s, Apple Computer won a contract to supply Apple II computers running CP/M and COMAL to Irish secondary schools.

Between 1984-1987 TeleNova, a susidiary of the industrial arm of the Swedish Telecoms system, Teli industrier manufactured a desktop PC called "Compis" for the educational sector. An enhanced version of COMAL was supplied as the standard programming language for this PC. Versions were created for both CP/M86 and MS-DOS. The latter version is available for Windows XP. The (Swedish) reference manual is ISBN 91-24-40022-X

In 1990 Thomas Lundy and Rory O'Sullivan produced the definitive text on COMAL Programming.[citation needed] They matched and compared COMAL with BBC Structured Basic.

Availability[edit]

COMAL is available for:

Examples[edit]

Conditions:

IF condition THEN
  instructions
ENDIF

Loops:

FOR number:= 1 TO 1000 DO   
 PRINT number
ENDFOR

Print statements with variables:

INPUT "Whats your favourite number..." :nmr%
CLS
PRINT "Your favourite number is " ; nmr%

"Hello, world!"[edit]

10 PAGE
20 FOR number:= 1 TO 10 DO
30  PRINT "HELLO, WORLD!"
40 NEXT or ENDFOR (Unicomal)
50 END " "

Further reading[edit]

External links[edit]