_huang_lei-优快云博客

原创 wifi连接的局域网发送udp

今天在Qt中试了一下Qudpsocket,开始使用 udpSender>writeDatagram(datagram.data(),datagram.size(),QHostAddress::Broadcast,45454);客户端和服务端在本机上运行的都很好，后来将客户端移到arm板上发现接受不到数据，但可以接受到tcp的说明网络没问题，搞了一会才发现是路由器和QHostAddress::Bro

2016-12-12 23:00:16 4343

转载 C/C++ struct位结构（位域）

从问题开始#includevoid main(){union{struct{unsigned short s1:3;unsigned short s2:3;unsigned short s3:3;}x;char c;}v;v.c=100;printf("%d/n",v.x.s3);}A:4 B:0 C:3 D:6答案是A但

2016-12-11 18:47:55 607

原创 qt+mysql+windows

今天搞Qt5.7加载mysql5.7搞啦一天，记录一下。环境：win10+qt5.7+mysql5.71.mysql驱动，在qt5.7中mysql的驱动程序自带，不用编译，2.mysql的链接库，注意这里要使用非安装版的mysql中的库而且要是32位的，不然加载不成功，我用的是mysql-5.7.16-win32.zip解压包解压的，这个包就是在官网下载的。下面是lib文件里面有两个dll库

2016-12-05 18:08:42 2046 1

原创 HDU4857

逃生Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 3613 Accepted Submission(s): 1026Problem Description糟糕的事情发生啦，现在大家都忙着逃命。但是逃命

2016-05-26 19:14:34 340

原创 HDU2647

RewardTime Limit: 2000/1000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 7031 Accepted Submission(s): 2187Problem DescriptionDandelion's uncle i

2016-05-26 16:01:42 356

原创 HDU5380

Travel with candyTime Limit: 2000/1000 MS (Java/Others) Memory Limit: 262144/262144 K (Java/Others)Total Submission(s): 319 Accepted Submission(s): 137Problem DescriptionThere ar

2016-05-11 09:52:55 665

原创 HDU5675

ztr loves mathTime Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/65536 K (Java/Others)Total Submission(s): 766 Accepted Submission(s): 296Problem Descriptionztr loves res

2016-05-10 21:02:28 365

原创 HDU1006

Tick and TickTime Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 16714 Accepted Submission(s): 4086Problem DescriptionThe three h

2016-05-09 18:47:09 628

原创 HDU 4532

湫秋系列故事——安排座位Time Limit: 20000/10000 MS (Java/Others) Memory Limit: 65535/32768 K (Java/Others)Total Submission(s): 656 Accepted Submission(s): 235Problem Description　　为了给腾讯公司找到更多

2016-05-06 19:00:21 542

原创 UVALive - 4845 组合数

PasswordTime Limit: 3000MS Memory Limit: Unknown 64bit IO Format: %lld & %lluSubmit StatusDescriptionShoulder-surfing is the behavior of intentionally and ste

2016-04-28 19:04:03 292

原创 HDU4002

Find the maximumTime Limit: 2000/1000 MS (Java/Others) Memory Limit: 65768/65768 K (Java/Others)Total Submission(s): 1951 Accepted Submission(s): 817Problem DescriptionEuler's To

2016-04-23 19:09:47 337

原创 HDU1134

Game of ConnectionsTime Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 3900 Accepted Submission(s): 2254Problem Description

2016-04-23 15:55:54 313

原创 HUD 2818

Building BlockProblem DescriptionJohn are playing with blocks. There are N blocks (1 M X Y : Put the whole pile containing block X up to the pile containing Y. If X and Y are in the same

2016-01-23 11:12:12 219

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