单项选择题下列程序执行后,变量a的值为______。 dim a, b, c, d as single a=100 b=20 c=1000 if b>a then d=a: a=b: b=d end if if c>a then d=a: a=c: c: d end if if c>b then d=b: b=c: c=d end if
单项选择题有如下函数过程: Function lj(x As Integer) As Long Dim s As Long Dim i As Integer s=0 For i = 1 To x s=s+ i Next i 1j= s End Function在窗体上添加一个命令按钮,名为Command1, 编写事件过程调用该函数: Private Sub Command1 Click() Dim i As Integer Dim sum As Long For i = 1 To 5 sum = sum + 1j(i) Next i Print sum End Sub