Question: Thanks 3) Write a denotational semantic mapping for switch in c++. Compute the weakest precondition for b-b+3*a- (4 (l 1b>2 5) Prove the following program

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

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