下列程序的执行结果为 Private Sub Command1_Click( ) Dim FirStr As String FirSt = abcdef Print Pat(FirStr) End Sub Private Function Pat( xStr As String) As String Dim tempStr As String, strLen As Integer tempStr = strLen = Len(xStr) i=1 Do While i<=Len(xStr)-3 tempStr = tempStr + Mid(xStr, i, 1 ) + Mid(xStr, strLen - i + 1, 1 ) i=i+1 Loop Pat = tempStr End Function
A.abcdef
B.afbecd
C.fedcba
D.defabc