Prirate Sub Command1_Click()
D.im count(25)As Integer,ch As String
ch=UCase(InputBox(”请输入字母字符串”))
F.or k=1 To Len(ch)
n=Asc(Mid(ch,k,1))-Asc(”A”)
If n>=0 Then
count(n)=count(n)+1
E.nd If
Next k
m=count(0)
F.or k=1 T0 25
IfIn<count(k)Then
Ill=count(k)
E.nd If
Next k
Print m
E.nd sub
A.0
B.1
C.2
D.3