程序段如下：
Private Sub Command1_Click()
a=0
for I=15 To 15 Step-2
a=a+I
Next I
Print a,I
End Sub
发生Command1的单击事件后，程序的输出结果是______。

单项选择题有如下的程序片段，该程序片段的执行完后，共执行循环______次。Private Sub Command1_Click()total=0Counter=1doPrint Countertotal=total+CounterPrint total, 111 Counter=Counter+1if total＞=10 thenexit doEnd ifLoop while Counter＜=10End Sub

单项选择题窗体上画一个命令按钮，然后编写如下代码：Private Type RecordID As IntegerName As String*20End TypePrivate Sub Command1_Click()Dim MaxSize，NextChar,MyCharOpen c: file.txt for Input As #1NaxSize=LOF(1)for NextChar=NaxSize To 1 Step-1Seek #1,NextCharHyChar=Input(1,#1)Next NextCharPrint EOF(1)Close #1End Sub程序运行后，单击命令按钮，其输出结果为______。