If Mid(str, 1, 1) = "A" Then Msgbox "第一个字符是A"Else Msgbox "第一个字符不是A"End IfIf Mid(str, 2, 1) = "T" Then Msgbox "第二个字符是T"Else Msgbox "第二个字符不是T"End If
貌似if left(str,2)="AT" ....
str[0]=='A'str[1]=='T'这样来判断是不是
