题库 高中信息
题干
用VB语言编写计算的算法。程序如下所示，循环结构可以用Do While语句或For语句，那么①中应入填写的是 ，②中应该填入的是 。
Sub Command1_Click()
Dim i As Integer, sum As Integer
sum = 0
Do while i <="n"
sum =" sum" + ①
②
Next i
Text1.text = Str(sum)
End Sub
Sub Command1_Click()
Dim i As Integer, sum As Integer
sum = 0
Do while i <="n"
sum =" sum" + ①
②
Next i
Text1.text = Str(sum)
End Sub
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