Dim I As Integer '定義了壹個循環變量
Dim N As Integer '定義了壹個整形變量,用來接收用戶輸入的數字
Dim S As Long '定義了壹個長整型變量,用來存儲累加和
S = 0 '設初值
N = Val(InputBox("請輸入壹個數字:")) '彈出壹個輸入對話框,並把得到的值賦給變量 N
For I = 1 To N
S = S + I
Next
Print "從1累加到" & N & "的和是:" & S
End Sub