题目内容
(请给出正确答案)
[单选题]
有如下VB程序段:n = Len(Text1.Text)i = 1Do While i <= na(i) = Mid(Text1.Text, i, 1)i = i + 1LoopDo While n > 1If a(n) >= "0" And a(n) <= "9" Thenj = 1Elsej = 2End Ifb(j) = b(j) + 1n = n - 1LoopText2.Text = Str(b(2))数组元素的初始值都为0,文本框Text1的内容为“七选3,加油!”(无空格),执行程序后,变量b(2)的值为()
A.3
B.4
C.5
D.6
答案
C、5
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