【简答题】用do while...loop循环实现输入字符串的逆序输出。如输入“ABCD”,输出“DCBA”。 Dim str As String, x As String, new_str As String Dim i As Integer, length As Integer str = InputBox("please input the string:") length = (______) i ...
【简答题】使用do...while循环实现输出2-3+4-5+6...+100 的和 Dim sum As Integer, count As Integer sum = 0 count = 2 Do If ______ Then sum = sum + count Else _______ End If Loop While _______ Print "2-3+4-5+...+100的和为" & sum