执行如下Visual Basic程序段时,出现了如下图所示的错误:
Private Sub Command1_Click()
Dim a As Integer, b As Integer
a =" 5:" b = 8
b =" a" + b
label1.Caption = Str(b)
End Sub
引发此错误的语句可能为( )
A.Dim a As Integer, b As Integer | B.a =" 5:" b = 8 |
C.b =" a" + b | D.label1.Caption = Str(b) |