ALGOL 60 - Programming language

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ALGOL 60 is a programming language created in 1960 by John Backus and Friedrich L. Bauer and Julien Green and Charles Katz and John McCarthy and Peter Naur and Alan Perlis and Heinz Rutishauser and Klaus Samelson and Adriaan van Wijngaarden and Bernard Vauquois and Joseph Henry Wegstein and Michael Woodger.

#318on PLDB

64Years Old

Wikipedia · Docs

ALGOL 60 (short for Algorithmic Language 1960) is a member of the ALGOL family of computer programming languages. It followed on from ALGOL 58 which had introduced code blocks and the begin and end pairs for delimiting them. ALGOL 60 was the first language implementing nested function definitions with lexical scope. Read more on Wikipedia...

Tags: programming language
Early development of ALGOL 60 happened in International Federation for Information Processing
ALGOL 60 on HOPL
See also: (28 related languages) ALGOL 58, Simula, CPL, Pascal, Ada, C, Algol, CPL, BCPL, B, ALGOL W, ALGOL 68, COBOL, Scheme, Lisp, SMIL, ACT-III, Elliott ALGOL, Executive Systems Problem Oriented Language, NEWP, ALGOL N, Atlas Autocode, CORAL, Edinburgh IMP, ISWIM, JOVIAL, NELIAC, S-algol
6 PLDB concepts link to ALGOL 60: ALGOL W, Executive Systems Problem Oriented Language, Modula, Oberon, Pascal, Simula

Example from the web:

procedure Absmax(a) Size:(n, m) Result:(y) Subscripts:(i, k);
   value n, m; array a; integer n, m, i, k; real y;
comment The absolute greatest element of the matrix a, of size n by m,
    is transferred to y, and the subscripts of this element to i and k;
begin
    integer p, q;
    y := 0; i := k := 1;
    for p := 1 step 1 until n do
        for q := 1 step 1 until m do
            if abs(a[p, q]) > y then
                begin y := abs(a[p, q]);
                    i := p; k := q
                end
end Absmax

Example from hello-world:

BEGIN
  FILE F(KIND=REMOTE);
  EBCDIC ARRAY E[0:11];
  REPLACE E BY "HELLO WORLD";
  WRITE(F, *, E);
END.

Example from Wikipedia:

'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'

Language features

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