Abstract
A revision of the 1966 Fortran standard, as proposed by the X3J3 committee, was published for review and comment in the March issue of ACM SIGPLAN Notices. Important new features are CHARACTER data type, more general use of expressions, file cataloging, and DO loops with negative increment or zero trip count. An IF-THEN-ELSE control structure is under consideration. This tutorial will cover (1) Fortran and Subset Fortran—what is a standard conforming program? (2) The CHARACTER data type; (3) Input and output: files and cataloging.
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