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Do ... Loop Á|¨Òºt¥Ü:
Option Explicit
Sub DoLoopTest()
Dim a#, b#, h#
Dim Rad#, c#
Dim iter%, IterMax%
Const e = 0.00000001 '»~®t³\¥iÈ
Const Pi = 3.14159265358979
IterMax = 500 '³Ì°ª·j´M¡¥N¼Æ
Rad = Pi * 45 / 180
a = 100 'ªì©lÈ
h = 5 'ªì©l·j´M¨Bªø
Do
b = a * Sin(Rad) - 20
If Abs(b) < e Then Exit Do '¯BÂI¼Æ¹Bºâ«ÜÃø±o¨ì§¹¥þ¬Ûµ¥
If b > 0 Then
a = a - h
Else
h = h * 0.5
a = a + h
End If
iter = iter + 1
Loop While iter < IterMax 'µL¸Ñ®É¥i¥H¸õ¥X °j°é
Debug.Print
Debug.Print " iter = " & iter
Debug.Print "Ans. a = " & a
Debug.Print " h = " & h
End Sub
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