Recall the attributed grammar from question 1 Consider the following axiomatic semantics:

{QID}ID>{Q}{QID,=0}{QID,=},issomeinteger {P1}S1ENDLINES2{Q}{P1}S1{P2},{P2}S2{Q},{Q+1}&{Q},{Q2}{Q},{P1}S1,S2{Q}{P1}S1{P2},{P2}S2{Q}{P1}S1ENDLINES2{Q}{P1}S2{P2},{P2}S1{Q}{Q+2}%{Q}{Q+ID}ID{Q} NOTE: The semantics in this questions is different from the one presented in other questions. For the following program, assuming the precondition is \{\} , what is the value of main in the postcondition? Show the proof. main step, show step &&,& show %,&