-59- The Y Programming Language~ David R. Hanson Department of Computer Science, The University of Arizona, Tucson, Arizona 85721 !. I n t r o d u c t i o n Y is a structured, general-purpose programming language intended for use in simple systems programming applications. More specifically', it is designed for applications similar to those described in the book Software Tools" [ker76]. Y is, in fact, meant to replace Ratfor [ker75] for those sorts of applications and in programming courses based on Software Tools. ",' is a relatively simple language. Syntactically, it falls about midway between Ratfor and C [ker78]. Semantically, it leans towards C except that it does not support all of the C types. Y programs are collections of modules, ,~hich contain global and local static data and procedures. Procedures are recursive and are composed of local data declarations and statements. Statements are made up from the usual structured control flow constructs and expressions. Y supports integers, characters, and reals, and singly dimensioned arrays of them. In addition to the intended application areas mentioned above, Y is the experimental realization of some recent ideas concerning separate compilation [han79b] and block structure [han80a]. It also
ACM SIGPLAN Notices – acm
Published: Feb 1, 1981
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