A modification is suggested to improve Hull's format of structured programming in FORTRAN. In addition a FORTRAN versions of Dijkstra's IF-FI and DO-OD constructs is presented, with examples of program segments written in this form.
One of the most important concepts in APL is that standard scalar dyadic functions may be extended element-by-element to compatible structures. This paper presents a new definition of compatability which is a generalization of the APL array-oriented concept. Examples of programs in the generalized version are given with comparisons to standard APL, FORTRAN, ALGOL, and PL/1.
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