VBc语言程序改错题 下列程序实现s=1-1/2+1/4-......1/(2n),其中1/(2n)<=10^-5(共有三处错误)指出序号并改正

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eventID:105-.966-w-s1czt
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Sorry,Source WebSite is going wrong and it can’t be accessed temporarily!
使用云防护后,为什么会出现502、快照?
原因可能有以下几点:
1.源站宕机、间歇性卡顿。
请检查源站的存活状态。。
2.源站响应超时30秒。
超过30秒未响应的请求会被云防护断开,显示502。
3.请核查在云防护DNS设置配置的源站IP是否正确,是否还留存错误的、已经不使用的服务器IP。
4.请检查源站防火墙是否拦截云防护节点IP。
5.当前页面由于敏感信息已经被网站卫士屏蔽,请删除相关违规信息。
-如果域名服务商的防火墙拦截云防护节点IP, 请与域名服务商联系解封并加白IP段。
-如果服务器防火墙(安全狗等)拦截云防护节点IP,请将云防护的IP段添加到服务器防火墙白名单中。
-如果您服务器未配置任何防火墙,请与您的机房联系,将云防护的IP段添加到机房防火墙白名单中。
Why there will be 502, snapshots after using WebGuard?
The reason may as follow:
1.The source website down or intermittent seriously slow.Please check the survival
status of source website .
2.The response time of source website exceed 30 seconds.The request time more than 30 seconds will be disconected by WebGuard ,and Display 502.
3.Please check if the source IP in the
DNS configuration of WebGuard
is correct, whether there remains IPS is wrong or no longer in use.
4.Please check if the firewall of source website blocked the IPs of WebGuard nodes.
-If the firewall of ISP blocked ,the IPs of WebGuard nodes. please contact the ISP to unlock and add the IP segments to whitelist.
-If the firewall of
server (safedog, etc.) blocked the IPs of WebGuard nodes, please add the IP segments to the whitelist of the server firewall.
-if you have not any firewall on server, please contact with your IDC, and add the IP segments of WebGuard to the whitelist of the IDC您所在位置: &
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VB程序设计多试题及答案解读.doc 150页
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VB程序设计多试题及答案解读
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9、Visual Basic程序改错 程序功能:求s=1+3+5+7+...直到s&2000为止。程序中有两行有错误。改正错误,使它能输出正确的结果。 (2025) 平方和Private Sub Form_Click()Dim i As Integer, s As Longs = 0 : i = 1Do Until
s & 2000s = s + ii = i + 1LoopPrint sEnd Sub答案:s&2000 ;
i+2程序功能:计算s=2!+4!+8!。程序中有两行有错误。改正错误,使它能输出正确的结果。 (40346)Private Sub Command1_Click()Dim k As Integer, i As IntegerDim s As Long, t As Longs = 0i = 1Do While i &= 3t = 1k = 1While k &= 2*it = t * kk = k + 1Wends = s + ti = i + 1wendPrint
sEnd Sub答案:k&=2^
程序功能:计算s=2!+4!+6!+8!。程序中有错误。改正错误,使它能输出正确的结果。 (41066)Private Sub Command1_Click()Dim k As Integer, i As IntegerDim s As Long, t As Longs = 0 : i = 1Do While i &= 4t = 1k = 1While k &= 2^it = t * kk = k + 1Wends = s + ti = i + 1wendPrint sEnd Sub答案:k&=2*
loop程序功能:求200到400间,能被3整除但不能被7整除的数的个数。程序中有两行有错误。改正错误,使它能输出正确的结果。(57)Private Sub Command1_Click()Dim count As IntegerDim x As Integercount = 0x = 200 While
x &= 400If x Mod 3 = 0 or x Mod 7 && 0 Thencount = count + 1End Ifx = x + 1LoopPrint countEnd Sub答案:
wend程序功能:求1到400间,同时能被3和7整除的数的个数。程序中有两行有错误。改正错误,使它能输出正确的结果。(19)Private Sub Form_Click()Dim count As IntegerDim x As IntegerFor x = 1 To 400if mod(x,3)=0 and mod(x,7)=0 thencount = count + 1end ifNext
countPrint countEnd Sub 答案:x Mod 3 = 0 And x Mod 7= 0;
x程序功能:求能被3整除且至少有一位数字为5的三位数的个数。程序中有两行有错误。改正错误,使它能输出正确的结果。(85)Private Sub Command1_Click()Dim count As IntegerDim a As Integer, b As Integer, c As IntegerDim x As Integerx = 100do While x &= 999If x Mod 3 = 0 Thena = Int(x / 100)b = Int((x - a * 100) / 10)c = x - a * 100 - b * 10If a = 5 and b = 5 and c = 5 Thencount = count + 1End IfEnd Ifx = x + 1wendPrint
countEnd Sub答案:a = 5 or b = 5 or c = 5
loop程序功能:求三位偶数中,个位数字与十位数字之和除以10所得的余数是百位数字的数的个数。程序中有两行有错误。改正错误,使它能输出正确的结果。(45) 奇数都是45Private Sub Command1_Click()Dim count As IntegerDim a As Integer, b As Integer, c As IntegerDim x As Integercount = 0x = 100While x &= 999a = Int(x / 100)b = Int(x / 10) - a * 10c = x - a * 100 - b * 1
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&第2题 (1.0分)& 题号:129'------------------------------------------------'【程序改错】'------------------------------------------------'题目:该程序实现将输入的 0 - 255 之间的正整数转'&&&&& 换成二进制数'------------------------------------------------Option ExplicitPrivate Sub Form_Click()&&&&&&& Const n = 8&&&&&&&& Dim a(n)&&& As Integer, s As String, m As Integer, x As Integer&&&&&&&& x = Val(InputBox("请输入一个 0 - 255 之间的正整数:"))&&&&&&&& Print x'**********FOUND**********&&&&&&&& For m = 1 To n&&&& a(m) = x Mod 2'**********FOUND**********&&&& x = x / 2&&&&&&&& Next m&&&&&&&& s = " "&&&&&& For m = n To 0 Step -1'**********FOUND**********&&&&&&&&&&& s = Str(a(m))&&&&&& Next m&&&&&& Print s& End Sub&答案:=======(答案1)=======For m = 0 To n=======(答案2)=======x= x \ 2=========或=========x= int(x/2)=======(答案3)=======s =& s& +& Str(a(m))第3题 (1.0分)& 题号:463'------------------------------------------------'【程序改错】'------------------------------------------------'题目:以下程序功能是输入三个数,由大到小排序。'------------------------------------------------Option ExplicitDim A As IntegerDim B As IntegerDim C As IntegerPrivate Sub Form_Click()&&& Dim nTemp As Integer&&& A = Val(InputBox("Please input first integer", "输入正整数"))&&& B = Val(InputBox("Please input second integer", "输入正整数"))&&& C = Val(InputBox("Please input third integer", "输入正整数"))&&& '**********FOUND**********&&& If A &= C Then&&&&&&& nTemp = A&&&&&&& A = B&&&&&&& B = nTemp&&& End If&&& '**********FOUND**********&&& If B &= C Then&&&&&&& nTemp = A&&&&&&& A = C&&&&&&& C = nTemp&&& End If&&& '**********FOUND**********&&& If A &= B Then&&&&&&& nTemp = B&&&&&&& B = C&&&&&&& C = nTemp&&& End If&&&&&& Print "The integers in order is"; A; B; CEnd Sub答案:=======(答案1)=======If A &= B Then
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