📄 3-8.aspx
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<%@page LANGUAGE = vb%>
<HTML>
<HEAD>
<title>Test Do</title>
</HEAD>
<BODY>
<TABLE width="100%" bordercolor="blue" border="1">
<TR height=25 bgcolor="blue" ><TD align="center"><font color="white">程序输出结果</font></TD></TR>
<TR bgcolor="white"><TD>
<%
Dim r As Integer = 0
Dim t As Integer = 0
Dim n As Integer = 0
Dim m As Integer = 0
Do While r > 5 ' 由于r小于5,因此循环并不执行
r = r + 1
Loop
Do
t = t + 1
Loop While t > 5 ' 不论r是什么值,循环都至少执行一次
Do
n = n + 1
' 使用While关键字,判断条件表达式的值为True,则继续循环
Loop While n < =5
Do
m = m + 1
' 使用Until关键字,判断条件表达式的值为True,则结束循环
Loop Until m >5
Response.Write("The number of the Do While cycle is " & r & "<br>")
Response.Write("The number of the Loop While cycle is " & t & "<br>")
Response.Write("The number of the while cycle is " & n & "<br>")
Response.Write("The number of the until cycle is " & m )
%>
</TD>
</TR>
</TABLE>
</BODY>
</HTML>
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