輸入圓的半徑 r(可能為小數),則 r 定義正確的是()。
A.Dim r As Single
B.Dim r As Integer
C.Dim r As String
D.Dim r As Long
正確答案:Dim r As Single
輸入圓的半徑 r(可能為小數),則 r 定義正確的是()。
A.Dim r As Single
B.Dim r As Integer
C.Dim r As String
D.Dim r As Long
正確答案:Dim r As Single