'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
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