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3) Write a denotational semantic mapping for switch in ctt 4) Compute the weakest precondition for b-b+3*a-1 (b>2) 5) Prove the following program is correct

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3) Write a denotational semantic mapping for switch in ctt 4) Compute the weakest precondition for b-b+3*a-1 (b>2) 5) Prove the following program is correct {n>0} count-0; sum-0; While countn do count-count +1 sum-sum+count; end[sum 1+2+...+n

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