[填空题] 下面程序运行后,单击命令按钮,输出的结果是 【12】 Private Sub Command1_Click() Dim a%(1 To 4),b%(2 To 6),i%,str1#,str2# For i=1 To 4a(i)=i Next For i=2 To 6 b(i) =iNextstr1 = YAG(a) str2 = YAG(b)Print "str1 ="; str1; "str2 ="; str2 End Sub Function YAG (a ( ) As Integer) Dim t#, i% t=1 For i = LBound(a) To UBound(a) t=t * a(i) Next YAG = t End Function