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4. According to the above, can we decide more problems with WHILE++ pro- grams than we can decide with WHILE-programs? Explain your answer briefly. [10 marks) prog read L { foreach x in L { while x { Y:= cons nil Y; X:= tl x } } } write Y 4. According to the above, can we decide more problems with WHILE++ pro- grams than we can decide with WHILE-programs? Explain your answer briefly. [10 marks) prog read L { foreach x in L { while x { Y:= cons nil Y; X:= tl x } } } write Y