99-47

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
'47.計算兩個相當長之整數的和， 
'如：12345678901234567890 + 12345678901234567890。
Public Class Form1
    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        TextBox3.Text = Val(TextBox1.Text) + Val(TextBox2.Text)
    End Sub
End Class