flag = False: n = 0
s = " Good Luck To You!"
For i = 1 To Len(s)
ch = Mid(s, i, 1)
If ch >= "a" And ch <= "z" And flag Then
n = n + 1: flag = False
Else
flag = True
End If
Next i
执行该程序段后,变量 n 的值为( )
For i = 1 To 3
For j = 1 To 6 - i
If a(j) > a(j + 1) Then t = a(j): a(j) = a(j + 1): a(j + 1) = t
Next j Next i
数组元素a(1)到a(6)的数据依次为“55,31,19,42,37,23”,则此程序运行完成后数组元素的数据依次是( )
i = 1: n = 5
Do While i <= n
x = Int(Rnd * 9) + 1
If x Mod 2 = 1 Then
a(i) = x
a(n) = x
n = n - 1
i = i + 1
Loop
数组元素的初值均为0,执行该程序段后,在下列选项中a(1)至a(5)各元素值可能的是( )
s = Text1.Text :n = Len(s)
s1 = s:i = 1
Do While i <= Len(s)
i = i + 1 Loop
Text2.Text = s1
上述程序中方框①处的可选语句有
①ch = Mid(s, i, 1)
②ch = Mid(s, n - i + 1, 1)
③s1 = s1 + ch
④s1 = ch + s1
则正确的语句为 ( )
图 a
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