在窗体上画一个名称为Command1的命令按钮,然后编写如下程序: Dim SW As Boolean Function func(X As Integer)As Integer IfX<20 ThenY=X ElseY=20+X End lf func=YEnd FunctionPrivate Sub Form_MouseDown(Button As Integer,Shift As Integer,X As Single,Y As Single) SW=FalseEnd SubPrivate Sub Form_MouseUp(Button As Integer,Shift As Integer,X As SinSle,Y As Single) SW=TrueEnd SubPrinvate Sub Command1_Click( ) Dim intNum As Integer intNum=InputBox(””) If SW ThenPrint func(intNum) End If End Sub程序运行后,单击命令按钮,将显示一个输入对话框,如果在对话框中输入25,则程序的执行结果为
A.输出0
B.输出25
C.输出45
D.无任何输出