[单项选择题] 设有如下程序：Private Sub Form_Click()Dim s As Long, f As LongDim n As Integer, i As Integer

[单项选择题] 设有如下程序： Private Sub Form_Click() Dim s As Long, f As Long Dim n As Integer, i As Integer

[单项选择题] 设有如下程序：

Private Sub Form_Click()

Dim s As Long, f As Long

Dim n As Integer, i As Integer

f=1

n=4

For i=1 To n

f=f*i

s=s+f

Next i

Print s

End Sub

程序运行后，单击窗体，输出结果是( )。

A．32

B．33

C．34

D．35

正确答案：

B

参考解析：

本题是一个典型的For循环结构，f的值在每次循环中都会乘上当前的循环变量，然后累加到变量s中，循环共执行4次，即1+1*2+1*2*3+1*2*3*4=33。