See this post in : English Version or French Version Private Sub Command1_Click() r = InputBox(“请输入您要判断的数字”) For i = 2 To r If Val(r) Mod i = 0 And i <> Val(r) Then ‘这里给出了非质数的条件 MsgBox (“此数为非质数”) Exit Sub End If Next i MsgBox (“此数为质数”) End Sub
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