根本就不需要用for
有算法的
而且数字大了for就鸡肋了
Private Sub Command1_Click()
s = 1
a = -1
For i = 2 To 100
s = s + a * i
a = -1 * a
Next i
Print s
End Sub
Private Sub Command1_Click()
For i = 1 To 99 Step 2
s = s + 1
Next i
Print -s
End Sub
mod
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