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