ABC

ABC is a programming language created in 1980.

#421on PLDB

44Years Old

Try now: Riju · TIO

ABC is an imperative general-purpose programming language and programming environment developed at CWI, Netherlands by Leo Geurts, Lambert Meertens, and Steven Pemberton. It is interactive, structured, high-level, and intended to be used instead of BASIC, Pascal, or AWK. It is not meant to be a systems-programming language but is intended for teaching or prototyping. Read more on Wikipedia...

ABC Wikipedia page
ABC first developed in Centrum Wiskunde & Informatica
ABC on HOPL
ABC appears in the TIOBE Index
See also: (9 related languages)SETL, ALGOL 68, Python, BASIC, Pascal, awk, C, Unix, ISBN

Example from Riju:

WRITE "Hello, world!" /

Example from hello-world:

WRITE "Hello World"

Example from the Hello World Collection:

\ Hello world in ABC

WRITE "Hello, World!" /

Example from Wikipedia:

HOW TO RETURN words document:
   PUT {} IN collection
   FOR line IN document:
      FOR word IN split line:
         IF word not.in collection:
            INSERT word IN collection
   RETURN collection

Feature	Supported	Token	Example
Strings	✓	"	"Hello world"
Print() Debugging	✓	WRITE
Semantic Indentation	✓

ABC - Programming language

Language features