[填空题] 下面程序的功能是统计字符串中"i"的个数,请填空。 Sub COU() Dim n As Integer a$="Beijing Universit
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[填空题] 下面程序的功能是统计字符串中"i"的个数,请填空。
Sub COU()
Dim n As Integer
a$="Beijing University of Technology"
n=Len(a$)
For i=1 To n
b$=Mid$(a$,i,1)
If ______ Then x=x+1
Next
Print "x=";x
End Sub
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