expected unqualified-id /

最新推荐文章于 2024-04-01 13:43:28 发布
原创 最新推荐文章于 2024-04-01 13:43:28 发布 · 845 阅读 · 0 ·
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#c/c++

本文介绍了 C++ 编程的基础知识，强调了类定义结束时使用分号的重要性，并指出 C++ 程序必须包含 main 函数。

expected unqualified-id:  在类的定义结尾的时候要有；号

c++  的文件必须要有main函数。

expected unqualified-id before ‘=‘ token
十三阿哥的博客
07-31 1万+
刚刚修改了一下代码的变量名，发现程序报错了，expected unqualified-id before ‘=’ token； 修改后的代码如下： 哦，刚刚没注意，因为near和far是C++中的关键字，结果被我给作为变量名使用了，所以抛出了异常！ 有时间得看看C++基础了，竟然连关键字都给忘了，草蛋！！！ 解决方案：修改变量名，不要用关键字作为变量名即可！ 说明：上述情况可能是抛出该异常的一种原因，可能存在其他方面的错误导致该异常的抛出！ ...
C++:错误：expected unqualified-id before ‘=’ token
mzhan017的博客
11-22 4871
文章目录错误原因 错误 ]oot@rhel-cleanmodules:~/mzhan017/test/c++[root@rhel-cleanmodules c++]# g++ auto.cpp auto.cpp: In function ‘int main()’: auto.cpp:25:10: error: expected unqualified-id before ‘=’ token int auto =3; 原因 因为auto 是一个关键字，不能作为变量名出现。 如果将auto 作为函数名，出现
Expected unqualified-id
chuanyituoku的专栏
04-13 3399
Xcode? kernel extension？ 错误发生在＃import的头文件中？ 那么，错误和可能在这个＃import之前的头文件中 很可能是少了个“；” Link：http://blog.youkuaiyun.com/zdl1016/article/details/5824443
error: expected unqualified-id before ‘do’ do{ error: expected unqualified-id before ‘while’ }
鲨鱼亲吻小鹿的博客
04-01 1827
C语言中编写宏函数时提示如下错误 error: expected unqualified-id before ‘do’ do{ error: expected unqualified-id before ‘while’ }
编译报错 expected unqualified-id
m0_38139098的博客
04-14 2万+
有一个project，中间有时间断点，之前也有功能没实现，后来点击编译 报错 expected unqualified-id 问题解决： 这是由于编译器没有检查到语法错误，又不知道报什么错 检查if else前后是否有没有写完的代码，大括号是否加全。 我是因为前面有一行代码没有写完。。。 ...
iOS Expected unqualified-id 和 Unkown type name 'NSString'
dongzhensong的博客
03-25 4979
iOS使用到OC与C++混编的时候刚把C++的类拖入工程编译, NSObjCRuntime与NSZone就报错:Expected unqualified-id Unkown type name ‘NSString’ Unkown type name ‘Protocol’ 错误提示如下 解决方案:修改你的.pch(项目头文件) 将所有的import与define的代码全部放在#ifd
expected unqualified-id before token (解决方案).md
08-30
expected unqualified-id before token (解决方案).md
QT调用gsettings报错expected unqualified-id before ‘public’
syangc的博客
01-05 1817
QT代码中调用gio.h头文件报错问题解决
/usr/include/aarch64-linux-gnu/qt5/QtGui/qwindowdefs.h:83: error: expected expression In file included from ../QT-XMY/ds18b20_thread_xmy.cpp:11: In file included from ../QT-XMY/mainwindow.h:4: In file included from /usr/include/aarch64-linux-gnu/qt5/QtWidgets/QMainWindow:1: In file included from /usr/include/aarch64-linux-gnu/qt5/QtWidgets/qmainwindow.h:44: In file included from /usr/include/aarch64-linux-gnu/qt5/QtWidgets/qwidget.h:44: /usr/include/aarch64-linux-gnu/qt5/QtGui/qwindowdefs.h:83:1: error: expected expression template<typename T> class QList; ^ /usr/include/aarch64-linux-gnu/qt5/QtGui/qwindowdefs.h:105: error: expected expression /usr/include/aarch64-linux-gnu/qt5/QtGui/qwindowdefs.h:105:1: error: expected expression template<class K, class V> class QHash; ^ /usr/include/aarch64-linux-gnu/qt5/QtGui/qwindowdefs.h:108: error: expected expression /usr/include/aarch64-linux-gnu/qt5/QtGui/qwindowdefs.h:108:1: error: expected expression template<class V> class QSet; ^ /usr/include/aarch64-linux-gnu/qt5/QtCore/qmargins.h:84: error: no matching function found in local scope In file included from ../QT-XMY/ds18b20_thread_xmy.cpp:11: In file included from ../QT-XMY/mainwindow.h:4: In file included from /usr/include/aarch64-linux-gnu/qt5/QtWidgets/QMainWindow:1: In file included from /usr/include/aarch64-linux-gnu/qt5/QtWidgets/qmainwindow.h:44: In file included from /usr/include/aarch64-linux-gnu/qt5/QtWidgets/qwidget.h:46: /usr/include/aarch64-linux-gnu/qt5/QtCore/qmargins.h:84:41: error: no matching function found in local scope friend Q_DECL_CONSTEXPR inline bool operator==(const QMargins &, const QMargins &) noexcept; ^~~~~~~~ /usr/include/aarch64-linux-gnu/qt5/QtCore/qmargins.h:85: error: no matching function found in local scope /usr/include/aarch64-linux-gnu/qt5/QtCore/qmargins.h:85:41: error: no matching function found in local scope friend Q_DECL_CONSTEXPR inline bool operator!=(const QMargins &, const QMargins &) noexcept; ^~~~~~~~ /usr/include/aarch64-linux-gnu/qt5/QtCore/qmargins.h:88: error: expected expression /usr/include/aarch64-linux-gnu/qt5/QtCore/qmargins.h:88:1: error: expected expression Q_DECLARE_TYPEINFO(QMargins, Q_MOVABLE_TYPE); ^ /usr/include/aarch64-linux-gnu/qt5/QtCore/qtypeinfo.h:282:41: note: expanded from macro 'Q_DECLARE_TYPEINFO' #define Q_DECLARE_TYPEINFO(TYPE, FLAGS) \ ^ /usr/include/aarch64-linux-gnu/qt5/QtCore/qmargins.h:102: error: qualified reference to 'QMargins' is a constructor name rather than a type in this context In file included from ../QT-XMY/ds18b20_thread_xmy.cpp:11: In file included from ../QT-XMY/mainwindow.h:4: In file included from /usr/include/aarch64-linux-gnu/qt5/QtWidgets/QMainWindow:1: In file included from /usr/include/aarch64-linux-gnu/qt5/QtWidgets/qmainwindow.h:44: In file included from /usr/include/aarch64-linux-gnu/qt5/QtWidgets/qwidget.h:46: /usr/include/aarch64-linux-gnu/qt5/QtCore/qmargins.h:102:35: error: qualified reference to 'QMargins' is a constructor name rather than a type in this context Q_DECL_CONSTEXPR inline QMargins::QMargins() noexcept : m_left(0), m_top(0), m_right(0), m_bottom(0) {} ^ /usr/include/aarch64-linux-gnu/qt5/QtCore/qmargins.h:102: error: expected unqualified-id /usr/include/aarch64-linux-gnu/qt5/QtCore/qmargins.h:102:44: error: expected unqualified-id Q_DECL_CONSTEXPR inline QMargins::QMargins() noexcept : m_left(0), m_top(0), m_right(0), m_bottom(0) {} ^ /usr/include/aarch64-linux-gnu/qt5/QtCore/qmargins.h:104: error: qualified reference to 'QMargins' is a constructor name rather than a type in this context /usr/include/aarch64-linux-gnu/qt5/QtCore/qmargins.h:104:35: error: qualified reference to 'QMargins' is a constructor name rather than a type in this context Q_DECL_CONSTEXPR inline QMargins::QMargins(int aleft, int atop, int aright, int abottom) noexcept ^ /usr/include/aarch64-linux-gnu/qt5/QtCore/qmargins.h:104: error: expected unqualified-id /usr/include/aarch64-linux-gnu/qt5/QtCore/qmargins.h:104:44: error: expected unqualified-id Q_DECL_CONSTEXPR inline QMargins::QMargins(int aleft, int atop, int aright, int abottom) noexcept ^ /usr/include/aarch64-linux-gnu/qt5/QtCore/qmargins.h:104: error: expected ')' /usr/include/aarch64-linux-gnu/qt5/QtCore/qmargins.h:104:44: error: expected ')' /usr/include/aarch64-linux-gnu/qt5/QtCore/qmargins.h:104:43: note: to match this '(' Q_DECL_CONSTEXPR inline QMargins::QMargins(int aleft, int atop, int aright, int abottom) noexcept ^ /usr/include/aarch64-linux-gnu/qt5/QtCore/qmargins.h:108: error: function definition is not allowed here /usr/include/aarch64-linux-gnu/qt5/QtCore/qmargins.h:108:1: error: function definition is not allowed here { return m_left==0 && m_top==0 && m_right==0 && m_bottom==0; } ^ /usr/include/aarch64-linux-gnu/qt5/QtCore/qmargins.h:111: error: function definition is not allowed here /usr/include/aarch64-linux-gnu/qt5/QtCore/qmargins.h:111:1: error: function definition is not allowed here { return m_left; } ^ /usr/include/aarch64-linux-gnu/qt5/QtCore/qmargins.h:114: error: function definition is not allowed here /usr/include/aarch64-linux-gnu/qt5/QtCore/qmargins.h:114:1: error: function definition is not allowed here { return m_top; } ^ /usr/include/aarch64-linux-gnu/qt5/QtCore/qmargins.h:117: error: function definition is not allowed here /usr/include/aarch64-linux-gnu/qt5/QtCore/qmargins.h:117:1: error: function definition is not allowed here { return m_right; } ^ /usr/include/aarch64-linux-gnu/qt5/QtCore/qmargins.h:120: error: function definition is not allowed here /usr/include/aarch64-linux-gnu/qt5/QtCore/qmargins.h:120:1: error: function definition is not allowed here { return m_bottom; } ^ /usr/include/aarch64-linux-gnu/qt5/QtCore/qmargins.h:124: error: function definition is not allowed here /usr/include/aarch64-linux-gnu/qt5/QtCore/qmargins.h:124:1: error: function definition is not allowed here { m_left = aleft; } ^ /usr/include/aarch64-linux-gnu/qt5/QtCore/qmargins.h:127: error: function definition is not allowed here /usr/include/aarch64-linux-gnu/qt5/QtCore/qmargins.h:127:1: error: function definition is not allowed here { m_top = atop; } ^ /usr/include/aarch64-linux-gnu/qt5/QtCore/qmargins.h:130: error: function definition is not allowed here /usr/include/aarch64-linux-gnu/qt5/QtCore/qmargins.h:130:1: error: function definition is not allowed here { m_right = aright; } ^ fatal error: too many errors emitted, stopping now [-ferror-limit=] 1 warning and 20 errors generated. make: *** [Makefile:464: ds18b20_thread_xmy.o] Error 1 make: *** Waiting for unfinished jobs....
最新发布
11-05
在编译包含 Qt 库的代码（ds18b20_thread_xmy.cpp）时，在 `/usr/include/aarch64-linux-gnu/qt5/QtGui/qwindowdefs.h` 和 `/usr/include/aarch64-linux-gnu/qt5/QtCore/qmargins.h` 文件中出现 `expected ...
[Error] expected unqualified-id before‘[‘ token
weixin_60701410的博客
11-08 2万+
[Error] expected unqualified-id before'[' token类似bug解决
Xcode出现Expected unqualified-id 错误
wlher的博客
07-07 2万+
当编译器报错Expected unqualified-id时 首先查看红线下标所在位置，发现是在圆括号下，此处是语法错误：class类定义名称后不应有括号，与函数定义混淆。 教训：应定位错误位置，而不是想当然地认为是Circle的命名错误。 ...
[Error] expected unqualified-id before ‘new‘，原因可能是变量命名
qq_66554499的博客
04-03 2548
[Error] expected unqualified-id before 'new'，原因可能是变量命名
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jacke121的专栏
03-02 5801
expected unqualified-id before numeric constant问题原因
error: expected unqualified-id before 'xxx'
creambean的博客
07-01 6万+
发生了什么 看如下代码 class A { public: void do() {} }; 这会引起GCC报错: error: expected unqualified-id before 'do' 解释 通常 expected unqualified-id before 这个错误通常是因为语法错误引起的, 如上一个语句没有用 分毫结尾之类的. 这个也不例外, 原因就是 do是关键字, ...
pch文件配置出现 Expected unqualified-id 和 Unkown type name 'NSString'
diaochuanzhi7826的博客
01-19 438
1、发生的现象 之前代码还是没有报错的，由于某些代码比较常用，就打算配置一个pch文件引入常用的文件 但是引入的时候就出现了报错 2、原因与解决办法 2.1 原因 你引入的文件可能使用到OC与C++混编，把C++的类拖入工程编译 这是因为将C++拖入项目之后, 默认编译会先编译C++类, 编译之后导入OC的类的时候, 编译的场景是C++, 所以会出现unknown type的...
iOS的诡异错误 expected unqualified-id
无呼
02-04 1万+
不知道有没有人遇到过这样的错误，引入头文件的代码没有错误，但是出现 expected unqualified-id before interface 的错误。 在网上遍寻无获，只有逐个去检查代码，最后发现了原因所在。 原因：在某个类的头文件中，结尾处出现了某些错误（不属于语法错误的那种），编译器会把错误显示于引用这个头文件的地方，而不是这个头文件中。 说起
C++的一个编绎错误引发的问题分析 expected unqualified-id before ‘(’ token
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