vb计算S=1*2+2*3+3*4+.N*(N+1)直到和大于5000停止,输出结果及N的值.

Private Sub Command1_Click()
Dim N As Long,S As Long
Do
N = N + 1
S = S + N * (N + 1)
If S > 5000 Then Exit Do
Loop
Print "结果=" & S
Print " N =" & N
End Sub
'结果=5200
'N=24
请参考.