52.在 Pascal 语言中,判断 a 不等于 0 且 b 不等于 0 的正确的条件表达式是() [单选题] *
来源: NOIP题库
52.在 Pascal 语言中,判断 a 不等于 0 且 b 不等于 0 的正确的条件表达式是() [单选题] *
A. not a = 0 or not b = 0
B. not((a = 0) and (b = 0))
C. not(a = 0 and b = 0)
D. (a <> 0) and (b <> 0)
来源: NOIP题库
52.在 Pascal 语言中,判断 a 不等于 0 且 b 不等于 0 的正确的条件表达式是() [单选题] *
A. not a = 0 or not b = 0
B. not((a = 0) and (b = 0))
C. not(a = 0 and b = 0)
D. (a <> 0) and (b <> 0)