题目

设 C= “A”，写出下列布尔表达式的值。 （1） C>= “0” And C <= “9” Or C >= “A” And C <= “Z” （2） C<= “0” And C >= “9” Or C>= “A” And C <= “Z” （3） C>= “0” And C <= “9” And C>= “A” And C <= “Z” （4） C>= “0” Or C <= “9” And C>= “A” Or C <= “Z” 答案： 【1】True 【1】True 【1】False 【1】True

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