ALGOL W is a programming language. It was based on a proposal for ALGOL X by Niklaus Wirth and C. A. R. Hoare as a successor to ALGOL 60 in IFIP Working Group 2.1. When the committee decided that the proposal was not a sufficient advance over ALGOL 60, the proposal was published as A contribution to the development of ALGOL. After making small modifications to the language Wirth supervised a high quality implementation for the IBM/360 at Stanford University that was widely distributed.
It represented a relatively conservative modification of ALGOL 60, adding string, bitstring, complex number and reference to record datatypes and call-by-result passing of parameters, introducing the while statement, replacing switch with the case statement, and generally tightening up the language.
The implementation was written in PL/360, an ALGOL-like assembly language designed by Wirth. The implementation included influential debugging and profiling abilities.
Other articles related to "algol w":
... This demonstrates ALGOL W's record type facility ... RECORD PERSON ( STRING(20) NAME INTEGER AGE LOGICAL MALE REFERENCE(PERSON) FATHER, MOTHER, YOUNGESTOFFSPRING, ELDERSIBLING ) REFERENCE(PERSON) PROCEDURE YOUNGESTUNCLE (REFERENCE(PERSON) R) BEGIN REFERENCE(PERSON) P, M P = YOUNGESTOFFSPRING(FATHER(FATHER(R))) WHILE (P ¬= NULL) AND (¬ MALE(P)) OR (P = FATHER(R)) DO P = ELDERSIBLING(P) M = YOUNGESTOFFSPRING(MOTHER(MOTHER(R))) WHILE (M ¬= NULL) AND (¬ MALE(M)) DO M = ELDERSIBLING(M) IF P = NULL THEN M ELSE IF M = NULL THEN P ELSE IF AGE(P) < AGE(M) THEN P ELSE M END ...