Algol 60 Sample Program
Segment Sizes and Lifetimes in Algol 60 Programs. Ments of a sample of Algol 60 programs have been. Trace of a sample Algol program in terms of symbols. Install Xfoil Windows on this page. Algol 60 implementation the translation and use of algol 60 programs on a computer by randell, b and russell, l j condition: see description. Algol 60 sample.
This article is about the programming language family. For other uses, see. ALGOL,,,,,,,,,,,,,,, First appeared 1958 Influenced Most subsequent imperative languages (so-called ALGOL-like languages) e.g.,,,,, ALGOL (short for Algorithmic Language) is a family of computer, originally developed in the mid-1950s, which greatly influenced many other languages and was the standard method for description used by the in textbooks and academic sources for more than thirty years. In the sense that the syntax of most modern languages is 'Algol-like', it was arguably the most influential of the four high-level programming languages among which it was roughly contemporary:,, and. It was designed to avoid some of the perceived problems with FORTRAN and eventually gave rise to many other programming languages, including,,,,, and. ALGOL introduced code blocks and the begin end pairs for delimiting them. It was also the first language implementing definitions with.
Moreover, it was the first programming language which gave detailed attention to formal language definition and through the introduced, a principal notation for language design. There were three major specifications, named after the year they were first published: • – originally proposed to be called IAL, for International Algebraic Language. • – first implemented as X1 ALGOL 60 in mid-1960. Revised 1963.
• – introduced new elements including flexible arrays, slices, parallelism, operator identification. Revised 1973. Based his own on ALGOL 60 before developing.
ALGOL-W was based on the proposal for the next generation ALGOL, but the ALGOL 68 committee decided on a design that was more complex and advanced, rather than a cleaned, simplified ALGOL 60. ALGOL 68 is substantially different from ALGOL 60 and was not well received, so that in general 'Algol' means ALGOL 60 and dialects thereof. Main article: Since ALGOL 60 had no I/O facilities, there is no portable in ALGOL.
BEGIN FILE F(KIND=REMOTE); EBCDIC ARRAY E[0:11]; REPLACE E BY 'HELLO WORLD!' ; WRITE(F, *, E); END. A simpler program using an inline format: BEGIN FILE F(KIND=REMOTE); WRITE(F, ); END. An even simpler program using the Display statement: BEGIN DISPLAY('HELLO WORLD!'
An alternative example, using Elliott Algol I/O is as follows. Elliott Algol used different characters for 'open-string-quote' and 'close-string-quote': program HiFolks; begin print ‘Hello world’; end; Here is 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 £ (UK Pound Sign) was used for open quote and?
(Question Mark) for close quote. Special sequences were placed in double quotes (e.g. Produced a new line on the teleprinter). HIFOLKS' BEGIN PRINT £HELLO WORLD£L??'
END' The 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. The open and close quote characters were represented using '(' and ')' and spaces by%. 'BEGIN' WRITE TEXT('('HELLO%WORLD')'); 'END' ALGOL 68 [ ]. Main article: ALGOL 68 code was published with reserved words typically in lowercase, but bolded or underlined. Begin printf(($gl$,'Hello, world!'