彰商程式設計隊的99題練習題(48.計算兩個相當長之整數的乘積，如 1234567890123 * 1234567890123。)

 

 

    

 

 

程式

 

Public Class Form1
    Dim a As Decimal
    Dim b As Decimal
    Dim k
    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        a = TextBox1.Text
        b = TextBox2.Text
        k = a * b
        MsgBox(k)
    End Sub
End Class