高考问答琴弦有关的诗句:VB编程问题
来源：百度文库 编辑：高考问答 时间：2024/05/05 20:08:46
统计字符窜a中出现字符窜b的次数，然后输出。
Private Sub Form_Click()
a$ = "ABCDEHGABCDEFABCDEABCDABCABA"
b$ = "AB"
c = InStr(a$, b$)
x = 0
While e <> 0
x = x + 1
a$=mid$(a$,__!___+2)
c = InStr(a$, b$)
when ___!___
End Sub
Private Sub Form_Click()
a$ = "ABCDEHGABCDEFABCDEABCDABCABA"
b$ = "AB"
c = InStr(a$, b$)
x = 0
While e <> 0
x = x + 1
a$=mid$(a$,__!___+2)
c = InStr(a$, b$)
when ___!___
End Sub
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