Question

A B C D - C D C _____________ A B C 求A、B、C、D的值.用VB编程完成

Answer 1

Private Sub Command1_Click()

Dim i, j, k, l, iABCD, iCDC, iABC As Integer

Dim si, sj, sk, sl, sItem As String

For i = 0 To 9

For j = 0 To 9

For k = 0 To 9

For l = 0 To 9

si = Str(i)

sj = Str(j)

sk = Str(k)

sl = Str(l)

sItem = si & sj & sk & sl

iABCD = Val(sItem)

sItem = sk & sl & sk

iCDC = Val(sItem)

sItem = si & sj & sk

iABC = Val(sItem)

If iABCD - iCDC = iABC Then Print i, j, k, l

Next l

Next k

Next j

Next i

End Su