Question

vb程序题 输入一个字符，判断该字符是字母字符、数字字符还是其他字符，并做相应显示。

Answer 1

dim a as string
a=inputbox("请输入一个字符")
select case a
case "0" to "9"
msgbox "是数字"
case "a" to "z","A" to "Z"
msgbox "是字母"
case else
msgbox "是其它字符"
end select

Answer 2

if instr("abcdef....zA....Z",i)>0 then
msgbox i & "是英文字母"
else if instr("0123456789",i)>0 then
msgbox i & "是数字"
else
msgbox i & "是其他字符"
end if

Answer 3

Private Sub Command1_Click()
n = 0
m = 0
k = 0
l = 0
aa = 0
bb = Text1
Do Until Len(bb) = 0
aa = Asc(bb)
bb = Right(bb, Len(bb) - 1)
Print aa
If 97 <= aa And aa <= 122 Then
n = n + 1
Else
If 65 <= aa And aa <= 90 Then
m = m + 1
Else
If 48 <= aa And aa <= 57 Then
k = k + 1
Else
l = l + 1
End If
End If
End If
Loop
Print "小写字母为"; n; "个"
Print "大写字母为"; m; "个"
Print "数字为"; k; "个"
Print "特殊符号为"; l; "个"
End Sub