Correctness of the Algol Procedure Askforhand
London, Ralph L.
University of Wisconsin-Madison Department of Computer Sciences
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Reasons are given to justify the writing of this particular proof of correctness. They include (i) illustration of some new techniques of proof, (ii) experimentation with a method of presenting a proof and (iii) presentation of an example of a successful proof to encourage more such proofs of other programs. The specific example is an Algol procedure ASKFORHAND which is supposed to read a bridge hand from a teletype. That task is defined and a proof is given that the procedure properly performs this task.