<?xml version="1.0" encoding="utf-8" ?><rss version="2.0"><channel><title><![CDATA[jinjin_longlong的博客]]></title><description><![CDATA[]]></description><link>https://blog.youkuaiyun.com/jinjin_longlong</link><language>zh-cn</language><generator>https://blog.youkuaiyun.com/</generator><copyright><![CDATA[Copyright &copy; jinjin_longlong]]></copyright><item><title><![CDATA[qt使用科大讯飞语音]]></title><link>https://blog.youkuaiyun.com/jinjin_longlong/article/details/170022077</link><guid>https://blog.youkuaiyun.com/jinjin_longlong/article/details/170022077</guid><author>jinjin_longlong</author><pubDate>Wed, 04 Nov 2026 09:00:31 +0800</pubDate><description><![CDATA[]]></description><category></category></item><item><title><![CDATA[opencv_qt]]></title><link>https://blog.youkuaiyun.com/jinjin_longlong/article/details/170021859</link><guid>https://blog.youkuaiyun.com/jinjin_longlong/article/details/170021859</guid><author>jinjin_longlong</author><pubDate>Wed, 04 Nov 2026 08:59:20 +0800</pubDate><description><![CDATA[【代码】opencv_qt。]]></description><category></category></item><item><title><![CDATA[8.22新函数]]></title><link>https://blog.youkuaiyun.com/jinjin_longlong/article/details/169817930</link><guid>https://blog.youkuaiyun.com/jinjin_longlong/article/details/169817930</guid><author>jinjin_longlong</author><pubDate>Mon, 02 Nov 2026 08:59:38 +0800</pubDate><description><![CDATA[【代码】8.22新函数。]]></description><category></category></item><item><title><![CDATA[8.19号函数]]></title><link>https://blog.youkuaiyun.com/jinjin_longlong/article/details/169817739</link><guid>https://blog.youkuaiyun.com/jinjin_longlong/article/details/169817739</guid><author>jinjin_longlong</author><pubDate>Mon, 02 Nov 2026 08:58:36 +0800</pubDate><description><![CDATA[常见使用场景：弹出提示框、表单校验失败之后，自动把光标定位到填错的输入框，提升用户体验。，不需要手动点击一下输入框。输入框里面，用户可以。]]></description><category></category></item><item><title><![CDATA[页面设计技巧]]></title><link>https://blog.youkuaiyun.com/jinjin_longlong/article/details/169817432</link><guid>https://blog.youkuaiyun.com/jinjin_longlong/article/details/169817432</guid><author>jinjin_longlong</author><pubDate>Mon, 02 Nov 2026 08:56:52 +0800</pubDate><description><![CDATA[改布局。]]></description><category></category></item><item><title><![CDATA[C++ 认识字符串]]></title><link>https://blog.youkuaiyun.com/jinjin_longlong/article/details/169744360</link><guid>https://blog.youkuaiyun.com/jinjin_longlong/article/details/169744360</guid><author>jinjin_longlong</author><pubDate>Sun, 01 Nov 2026 15:55:25 +0800</pubDate><description><![CDATA[它只是一个普通的字符数组，不能当字符串使用（比如 printf 输出会乱码）。，编译器会懵：“你要把6个字节的东西塞进只占1个字节的变量里？，让编译器在栈上（或全局区）划出6个字节的真实空间来存放这些字符。叫空字符（ASCII码为0），不是数字0，也不是字符。因此，为了避免错误，指向字符串常量时最好加上。（指向长度为10的字符数组的指针）。C语言没有专门的字符串类型，它用。，就不是数组，只能存一个值。这样就定义了一个字符串。：因为你要创建的是一个。]]></description><category></category></item><item><title><![CDATA[绘画多边形，类]]></title><link>https://blog.youkuaiyun.com/jinjin_longlong/article/details/169639411</link><guid>https://blog.youkuaiyun.com/jinjin_longlong/article/details/169639411</guid><author>jinjin_longlong</author><pubDate>Sat, 31 Oct 2026 11:14:57 +0800</pubDate><description><![CDATA[把选中的放第一层：]]></description><category></category></item><item><title><![CDATA[C++ 第二次试卷]]></title><link>https://blog.youkuaiyun.com/jinjin_longlong/article/details/169639326</link><guid>https://blog.youkuaiyun.com/jinjin_longlong/article/details/169639326</guid><author>jinjin_longlong</author><pubDate>Sat, 31 Oct 2026 11:13:50 +0800</pubDate><description><![CDATA[【代码】C++ 第二次试卷。]]></description><category></category></item><item><title><![CDATA[C++ 第三次试卷]]></title><link>https://blog.youkuaiyun.com/jinjin_longlong/article/details/169639248</link><guid>https://blog.youkuaiyun.com/jinjin_longlong/article/details/169639248</guid><author>jinjin_longlong</author><pubDate>Sat, 31 Oct 2026 11:12:48 +0800</pubDate><description><![CDATA[QT_BEGIN_NAMESPACE
namespace Ui {
class MainWindow;
}
QT_END_NAMESPACEclass MainWindow : public QMainWindow
{
    Q_OBJECTpublic:
    explicit MainWindow(QWidget parent = nullptr);
    ~MainWindow() override;
    QTimer m_timer;
    void time_out(void);
  ]]></description><category></category></item><item><title><![CDATA[C++ 第一次试卷]]></title><link>https://blog.youkuaiyun.com/jinjin_longlong/article/details/169269953</link><guid>https://blog.youkuaiyun.com/jinjin_longlong/article/details/169269953</guid><author>jinjin_longlong</author><pubDate>Wed, 28 Oct 2026 00:24:51 +0800</pubDate><description><![CDATA[【代码】C++ 第一次试卷。]]></description><category></category></item><item><title><![CDATA[科大讯飞语音转文字]]></title><link>https://blog.youkuaiyun.com/jinjin_longlong/article/details/169269945</link><guid>https://blog.youkuaiyun.com/jinjin_longlong/article/details/169269945</guid><author>jinjin_longlong</author><pubDate>Wed, 28 Oct 2026 00:23:50 +0800</pubDate><description><![CDATA[科大讯飞语音转文字。]]></description><category></category></item><item><title><![CDATA[C++ 定时器]]></title><link>https://blog.youkuaiyun.com/jinjin_longlong/article/details/169269938</link><guid>https://blog.youkuaiyun.com/jinjin_longlong/article/details/169269938</guid><author>jinjin_longlong</author><pubDate>Wed, 28 Oct 2026 00:22:42 +0800</pubDate><description><![CDATA[connect是当m_timer定时器发出timeout信号时，自动执行MainWindow的time_out()函数。]]></description><category></category></item><item><title><![CDATA[C++ 电赛错误]]></title><link>https://blog.youkuaiyun.com/jinjin_longlong/article/details/169171399</link><guid>https://blog.youkuaiyun.com/jinjin_longlong/article/details/169171399</guid><author>jinjin_longlong</author><pubDate>Tue, 27 Oct 2026 00:25:43 +0800</pubDate><description><![CDATA[有可能乱序、顺时针，打印四条边看一下就知道。]]></description><category></category></item><item><title><![CDATA[求子集的异或和]]></title><link>https://blog.youkuaiyun.com/jinjin_longlong/article/details/169171392</link><guid>https://blog.youkuaiyun.com/jinjin_longlong/article/details/169171392</guid><author>jinjin_longlong</author><pubDate>Tue, 27 Oct 2026 00:24:42 +0800</pubDate><description><![CDATA[定义子集异或总和：子集全部元素依次异或，空集异或为 0。给定数组 nums，算出它所有子集的异或总和，全部相加后返回总和。]]></description><category></category></item><item><title><![CDATA[C++ 字符串指针]]></title><link>https://blog.youkuaiyun.com/jinjin_longlong/article/details/169171376</link><guid>https://blog.youkuaiyun.com/jinjin_longlong/article/details/169171376</guid><author>jinjin_longlong</author><pubDate>Tue, 27 Oct 2026 00:22:25 +0800</pubDate><description><![CDATA[p一开始存储的是hello的起始地址，0x1000，它是一个8字节大小的，你要直接指向某个位置就可以用。p来指向，p是你现在的位置，p是可以增加和减小的，你p++，它就指向e了；要是想要改变指向就把p变成另一个字符串的首地址就行  p = "nhhsj";我这里有两个字符串''hello''和“nhhsj”；首先我们把p指向’‘hello’‘；hello其实就是const char* p=“hello”；然后电脑就给它分配了一个内存，它的地址就是&p；*(p+1),这个时候p的数值就变成了0x1001;]]></description><category></category></item><item><title><![CDATA[C++ 子集]]></title><link>https://blog.youkuaiyun.com/jinjin_longlong/article/details/169135030</link><guid>https://blog.youkuaiyun.com/jinjin_longlong/article/details/169135030</guid><author>jinjin_longlong</author><pubDate>Mon, 26 Oct 2026 08:53:13 +0800</pubDate><description><![CDATA[数组中的每个元素都有「选取」与「未选取」两个状态，可以对应一个二进制位的 1 与 0。那么对于一个长度为 n 的数组 nums，我们也可以用 n 个二进制位的整数来唯一表示每个元素的选取情况。此时该整数第 j 位的取值表示数组第 j 个元素是否包含在对应的子集中。−1] 中的整数 i，其第 j 位的取值表示 nums 的第 j 个元素是否包含在对应的子集中。对于每个整数 i，我们遍历它的每一位计算对应子集的异或总和，并维护这些值之和。根据 提示 1 与 提示 2，我们枚举 [0,2。]]></description><category></category></item><item><title><![CDATA[复制多边形 步骤]]></title><link>https://blog.youkuaiyun.com/jinjin_longlong/article/details/169134876</link><guid>https://blog.youkuaiyun.com/jinjin_longlong/article/details/169134876</guid><author>jinjin_longlong</author><pubDate>Mon, 26 Oct 2026 08:52:11 +0800</pubDate><description><![CDATA[注意点一定要在cpp文件创建一下，要不然会报错，好像变成纯虚构就可以不构建了；我们接下来就需要和窗口对接了，来获取鼠标位置和状态了。出现问题，只能是未被选中状态。]]></description><category></category></item><item><title><![CDATA[C++ 因式分解]]></title><link>https://blog.youkuaiyun.com/jinjin_longlong/article/details/169134634</link><guid>https://blog.youkuaiyun.com/jinjin_longlong/article/details/169134634</guid><author>jinjin_longlong</author><pubDate>Mon, 26 Oct 2026 08:50:39 +0800</pubDate><description><![CDATA[]]></description><category></category></item><item><title><![CDATA[只用两个数进行交换不引入第三个数]]></title><link>https://blog.youkuaiyun.com/jinjin_longlong/article/details/168980324</link><guid>https://blog.youkuaiyun.com/jinjin_longlong/article/details/168980324</guid><author>jinjin_longlong</author><pubDate>Sun, 25 Oct 2026 01:53:16 +0800</pubDate><description><![CDATA[可以自由加括号拆分运算，交换数字的核心数学依据。缺点：a+b 数值过大时会发生 int 溢出。，每一位都相同，全 0。]]></description><category></category></item><item><title><![CDATA[C++ 动态库]]></title><link>https://blog.youkuaiyun.com/jinjin_longlong/article/details/168980298</link><guid>https://blog.youkuaiyun.com/jinjin_longlong/article/details/168980298</guid><author>jinjin_longlong</author><pubDate>Sun, 25 Oct 2026 01:52:13 +0800</pubDate><description><![CDATA[动态库。]]></description><category></category></item></channel></rss>