Error c2143 syntax error missing before constant

Ошибка компилятора C2143

синтаксическая ошибка: отсутствует «token1» перед «token2»

Компилятор ожидал определенный маркер (т. е. элемент языка, отличный от пробела) и нашел вместо него другой маркер.

Проверьте справочник по языку C++ , чтобы определить, где код синтаксически неверен. Так как компилятор может сообщить об этой ошибке после обнаружения строки, которая вызывает проблему, проверьте несколько строк кода, предшествующих ошибке.

C2143 может возникать в разных ситуациях.

Это может произойти, когда за оператором, который может квалифицировать имя ( :: , -> и . ), должно следовать ключевое слово template , как показано в следующем примере:

По умолчанию В C++ предполагается, что Ty::PutFuncType это не шаблон, поэтому следующее интерпретируется как знак меньшего. Необходимо явно сообщить компилятору, что PutFuncType является шаблоном, чтобы он смог правильно проанализировать угловую скобку. Чтобы исправить эту ошибку, используйте ключевое template слово для имени зависимого типа, как показано ниже:

C2143 может возникать, если используется /clr и using директива имеет синтаксическую ошибку:

Это также может произойти при попытке скомпилировать файл исходного кода с помощью синтаксиса CLR без использования /clr:

Первый символ без пробелов, следующий за оператором if , должен быть левой скобкой. Компилятор не может перевести ничего другого:

C2143 может возникать, когда закрывающая фигурная скобка, круглые скобки или точка с запятой отсутствуют в строке, в которой обнаружена ошибка, или в одной из строк выше:

Или при наличии недопустимого тега в объявлении класса:

Или, если метка не присоединена к оператору. Если необходимо поместить метку сама по себе, например в конце составного оператора, прикрепите ее к оператору NULL:

Эта ошибка может возникать, когда выполняется неквалифицированный вызов типа в стандартной библиотеке C++:

Или отсутствует ключевое typename слово:

Или при попытке определить явное создание экземпляра:

В программе C переменные должны быть объявлены в начале функции и не могут быть объявлены после того, как функция выполнит инструкции, не являющиеся объявлениями.

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Error c2143 syntax error missing before constant

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Answered by:

Question

I am migrating my aaplication from VS2002 to VS2012. When i try to build one of my projects i am getting the following error:

Error 696 error C2143: syntax error : missing ‘;’ before ‘constant’ c:program filesmicrosoft sdkswindowsv7.1aincludewinuser.h 5341

Error 697 error C2059: syntax error : ‘constant’ c:program filesmicrosoft sdkswindowsv7.1aincludewinuser.h 5341

Error 698 error C2061: syntax error : identifier ‘LPINPUT’ c:program filesmicrosoft sdkswindowsv7.1aincludewinuser.h 5348

I have searched my code it is not using winuser.h anywhere. When I goto mentioned line number of winuser.h I find the following code:

typedef struct tagINPUT <
DWORD type;

union
<
MOUSEINPUT mi;
KEYBDINPUT ki;
HARDWAREINPUT hi;
>;
> INPUT, *PINPUT, FAR* LPINPUT; //line no. 5341

WINAPI
SendInput(
__in UINT cInputs, // number of input in the array
__in_ecount(cInputs) LPINPUT pInputs, // array of inputs //line no. 5348
__in int cbSize); // sizeof(INPUT)

What could be the problem? Any suggestions?

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Error c2143 syntax error missing before constant

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Asked by:

Question

Ok.. so I decide to start learning some inteligence and start in Visual C++ latest down load, get the turorials suggested which are great and get cracking at it.

After the fourth lesson I get the following build error

c:program filesmicrosoft visual studio 9.0vcincludeistream(13) : error C2143: syntax error : missing ‘;’ before ‘namespace’

the only difference with the various lesson projects I have been working on is the actual code

after typing the attached code I am unable to build all previous project lessons, I did the whole reboot thing and still the same problem?

Go to the directory indicated in the error message:

c:program filesmicrosoft visual studio 9.0vcinclude

Open the file istream with an editor or viewer. (Notepad will do.)

Copy and paste the first 20 lines of that file into a post here.

I suspect that you have a missing semi-colon or closing brace in your stdafx.h header file. You should begin your search there.

Best Wishes,
-David Delaune

Quote>I suspect that you have a missing semi-colon or closing brace in your stdafx.h header file

Note that the OP said:

Quote>after typing the attached code I am unable to build all previous project lessons

I take this to mean that projects which previously built cleanly will no longer do so.
Since each project should have it’s own stdafx.h it seems unlikely that this is the
source of the problem.

Note that the error message says:

missing ‘;’ before ‘namespace’

and points to line 13 of the header istream.

I see no word «namespace» anywhere in the istream header of my installation.

Note that the error message says:

missing ‘;’ before ‘namespace’

and points to line 13 of the header istream.

I see no word «namespace» anywhere in the istream header of my installation.

Check your definition of _STD_BEGIN.

Best Wishes,
-David Delaune

Quote>Check your definition of _STD_BEGIN.

Will no-one rid me of these meddlesome macros?

Good catch. Thanks.

That is correct regarding all the previous compiled projects, I have attached the requested code

That looks kosher, so the problem is probably earlier.

Looking at the include chain from iostream, it pulls in istream which pulls in ostream
which pulls in ios which pulls in xlocnum which pulls in climits, etc. etc. Before that,
stdafx.h pulls in targetver.h etc. etc. All of the above are pulled in (at least a few
dozen files) before we reach line 13 of istream where the error occurs.

First, go to the Project Properties and under
Configuration Properties=>C/C++=>Advanced
set the field «Show Includes» to «Yes» then click on «Apply/OK».

Go to the output window, select all of the lines, copy to Windows clipboard
and paste here in a message.

Second, answer these questions:

(1) Did you give each project its own name, or did you use the same name for each
project?

(2) Click on the Build menu, then click on «Clean Solution». Rebuild. Does the
problem persist?

(3) If the problem is still there, go to the Project Properties and under
Configuration Properties=>C/C++=>Precompiled Headers
set «Create/Use Precompiled Header» to «Not Using Precompiled Headers»
then click on «Apply/OK». Rebuild. Does the problem persist?

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Error c2143 syntax error missing before constant

can I add to the header
#include

using namespace std;

rather than add the std:: prefix?

In a header file, I’d refrain from using the using namespace std; simply because you may run into issue later on. If you plan on keeping this is a local code and you’ve already used the using namespace call, then yes, string would be fine.

Just trying to show you properly rather than poor techniques.

thank you — always better to learn correctly, I will make the change to std::

are these correct:
bool containsWordHelper(nodeT *w, string word)
bool containsWordHelper(nodeT *w, std::string word)

void add(string word);
void add(std::string word)

Minus the missing semicolons, they appear to be.

Also, if in doubt, it doesn’t hurt to try putting std:: in front of it. Compile before and after and see if you get errors the second time.

Of what type is Iterator? I don’t see a declaration of Iterator nor do I see a header that could potentially house the declaration.

I edited it out for the example code

#include «iterator.h» and a few other headers are under #define _lexicon_h

Then, something you omitted is the cause. Paste the Iterator implementation (without omitting anything) here. If it’s a big file, use http://www.pastebin.org/

I believe they meant they omitted the header files to reduce the size of the paste. If Iterator was defined elsewhere, then you need to know how, and how it can be used.

My response was in regards as to what was shown and since they accepted the answer, I assumed it was what they were looking for.

Iterator could have been misspelled and they could have been confused on the implementation of it.

Edit: Sorry Framework, I just found this, and it’s above my head. Maybe you can help a little more?
http://www.cplusplus.com/forum/beginner/73046/

making the change to std:: solved the linker errors but creates a new problem.

the current edit:
Iterator getWordIterator(); —> std::string::iterator getWordIterator();

now the compiler finds an issue with a mismatch between the declaration in the .h file and the call

error C2440: ‘initializing’ : cannot convert from ‘std::_String_iterator ‘ to ‘Iterator ‘

C2556: ‘Iterator Lexicon::getWordIterator(void)’ : overloaded function differs only by return type from ‘std::_String_iterator Lexicon::getWordIterator(void)’

error C2371: ‘Lexicon::getWordIterator’ : redefinition; different basic types

I did not post the entire code, just the header and the function the compiler found the error in

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Это ошибка синтаксиса. Связана она с отсутствием необходимых разделителей между элементами языка. Компилятор ожидает, что некоторые элементы языка появятся прежде или после других элементов. Если этого не происходит, то он выдаем ошибку. Будем пробовать ее получить. Пишем код:

#include "stdafx.h"
int main(int argc, char* argv[])
{
	int x;
	int y;
	if (x<y) :	// двоеточие здесь совсем не нужно
	{
	}
}

Результат работы компилятора:

D:VСTestErrorTestError.cpp(10) : error C2143: syntax error : missing ';' before ':'

Второй наиболее частый вариант это забыть поставить «;» после объявления класса.

#include "stdafx.h"

class CMy
{
}	// забыли ";"

class CMy2
{
}

int main(int argc, char* argv[])
{
}

Опять та же ошибка.

D:VСTestErrorTestError.cpp(12) : error C2236: unexpected 'class' 'CMy2'
D:VСTestErrorTestError.cpp(12) : error C2143: syntax error : missing ';' before '{'

Еще один вариант с лишней скобки:

#include "stdafx.h"

int main(int argc, char* argv[])
{
}		// это лишнее
return 0;
}

Опять та же ошибка:

D:VСTestErrorTestError.cpp(11) : warning C4508: 'main' : function should return a value; 'void' return type assumed
D:VСTestErrorTestError.cpp(12) : error C2143: syntax error : missing ';' before 'return'

Отсутствие закрывающей скобки может привести к такой же ошибке:

#include "stdafx.h"

int main(int argc, char* argv[])
{
	for (int x=0;x<10;x++		// не хватает ")"
	{
	}
	return 0;
}

Как видите это ошибка связанна с синтаксисом. Если она у Вас появляется внимательно просмотрите код на предмет соответствия требованиям C++ (лишние знаки, забытые

saddam alshloul
October 8, 2012 at 10:12 pm

guyzzz i did it like this

// Day10Doc.h : interface of the CDay10Doc class
//
/////////////////////////////////////////////////////////////////////////////

#if !defined(AFX_DAY10DOC_H__A12642CF_7E96_4273_B3B5_FA94CD497BEC__INCLUDED_)
#define AFX_DAY10DOC_H__A12642CF_7E96_4273_B3B5_FA94CD497BEC__INCLUDED_

#if _MSC_VER > 1000
#pragma once
#endif // _MSC_VER > 1000
class CLine;
class CDay10Doc : public CDocument
{
protected: // create from serialization only
CDay10Doc();
DECLARE_DYNCREATE(CDay10Doc)

// Attributes
public:

// Operations
public:

// Overrides
// ClassWizard generated virtual function overrides
//{{AFX_VIRTUAL(CDay10Doc)
public:
virtual BOOL OnNewDocument();
virtual void Serialize(CArchive& ar);
//}}AFX_VIRTUAL

// Implementation
public:
int GetLineCount();
CLine* AddLine(CPoint ptFrom, CPoint ptTo);
CObArray m_oaLines;
virtual ~CDay10Doc();
#ifdef _DEBUG
virtual void AssertValid() const;
virtual void Dump(CDumpContext& dc) const;
#endif

protected:

// Generated message map functions
protected:
//{{AFX_MSG(CDay10Doc)
// NOTE – the ClassWizard will add and remove member functions here.
// DO NOT EDIT what you see in these blocks of generated code !
//}}AFX_MSG
DECLARE_MESSAGE_MAP()
};

/////////////////////////////////////////////////////////////////////////////

//{{AFX_INSERT_LOCATION}}
// Microsoft Visual C++ will insert additional declarations immediately before the previous line.

#endif // !defined(AFX_DAY10DOC_H__A12642CF_7E96_4273_B3B5_FA94CD497BEC__INCLUDED_)

and that works good, thanx alot but after compiling i got another errors not in Day10.cpp file but in Day10View.cpp file
for Day10View the code is:

// Day10View.cpp : implementation of the CDay10View class
//

#include “stdafx.h”
#include “Day10.h”

#include “Day10Doc.h”
#include “Day10View.h”

#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif

/////////////////////////////////////////////////////////////////////////////
// CDay10View

IMPLEMENT_DYNCREATE(CDay10View, CView)

BEGIN_MESSAGE_MAP(CDay10View, CView)
//{{AFX_MSG_MAP(CDay10View)
ON_WM_LBUTTONDOWN()
ON_WM_LBUTTONUP()
ON_WM_MOUSEMOVE()
//}}AFX_MSG_MAP
// Standard printing commands
ON_COMMAND(ID_FILE_PRINT, CView::OnFilePrint)
ON_COMMAND(ID_FILE_PRINT_DIRECT, CView::OnFilePrint)
ON_COMMAND(ID_FILE_PRINT_PREVIEW, CView::OnFilePrintPreview)
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CDay10View construction/destruction

CDay10View::CDay10View()
{
// TODO: add construction code here

}

CDay10View::~CDay10View()
{
}

BOOL CDay10View::PreCreateWindow(CREATESTRUCT& cs)
{
// TODO: Modify the Window class or styles here by modifying
// the CREATESTRUCT cs

return CView::PreCreateWindow(cs);
}

/////////////////////////////////////////////////////////////////////////////
// CDay10View drawing

void CDay10View::OnDraw(CDC* pDC)
{
CDay10Doc* pDoc = GetDocument();
ASSERT_VALID(pDoc);
// TODO: add draw code for native data here
///////////////////////
// MY CODE STARTS HERE
///////////////////////
// Get the number of lines in the document
int liCount = pDoc->GetLineCount();
// Are there any lines in the document?
if (liCount)
{
int liPos;
CLine*lptLine;
// Loop through the lines in the document
for (liPos = 0; liPos GetLine(liPos);
// Draw the line
lptLine->Draw(pDC);
}
}
///////////////////////
// MY CODE ENDS HERE
///////////////////////
}

/////////////////////////////////////////////////////////////////////////////
// CDay10View printing

BOOL CDay10View::OnPreparePrinting(CPrintInfo* pInfo)
{
// default preparation
return DoPreparePrinting(pInfo);
}

void CDay10View::OnBeginPrinting(CDC* /*pDC*/, CPrintInfo* /*pInfo*/)
{
// TODO: add extra initialization before printing
}

void CDay10View::OnEndPrinting(CDC* /*pDC*/, CPrintInfo* /*pInfo*/)
{
// TODO: add cleanup after printing

}

/////////////////////////////////////////////////////////////////////////////
// CDay10View diagnostics

#ifdef _DEBUG
void CDay10View::AssertValid() const
{
CView::AssertValid();
}

void CDay10View::Dump(CDumpContext& dc) const
{
CView::Dump(dc);
}

CDay10Doc* CDay10View::GetDocument() // non-debug version is inline
{
ASSERT(m_pDocument->IsKindOf(RUNTIME_CLASS(CDay10Doc)));
return (CDay10Doc*)m_pDocument;
}
#endif //_DEBUG

/////////////////////////////////////////////////////////////////////////////
// CDay10View message handlers

void CDay10View::OnLButtonDown(UINT nFlags, CPoint point)
{
// TODO: Add your message handler code here and/or call default

CView::OnLButtonDown(nFlags, point);
}

void CDay10View::OnLButtonDown(UINT nFlags, CPoint point)
{
// TODO: Add your message handler code here and/or call default
///////////////////////
// MY CODE STARTS HERE
///////////////////////
// Capture the mouse, so no other application can
// grab it if the mouse leaves the window area
SetCapture();
// Save the point
m_ptPrevPos = point;
///////////////////////
// MY CODE ENDS HERE
///////////////////////
CView::OnLButtonDown(nFlags, point);
}

void CDay10View::OnLButtonUp(UINT nFlags, CPoint point)
{
// TODO: Add your message handler code here and/or call default
///////////////////////
// MY CODE STARTS HERE
///////////////////////
// Have we captured the mouse?
if (GetCapture() == this)
// If so, release it so other applications can
// have it
ReleaseCapture();
///////////////////////
// MY CODE ENDS HERE
///////////////////////
CView::OnLButtonUp(nFlags, point);
}

void CDay10View::OnMouseMove(UINT nFlags, CPoint point)
{
// TODO: Add your message handler code here and/or call default
///////////////////////
// MY CODE STARTS HERE
///////////////////////
// Check to see if the left mouse button is down
if ((nFlags & MK_LBUTTON) == MK_LBUTTON)
{
// Have we captured the mouse?
if (GetCapture() == this)
{
// Get the Device Context
CClientDC dc(this);
// Add the line to the document
CLine *pLine = GetDocument()->AddLine(m_ptPrevPos, point);
// Draw the current stretch of line
pLine->Draw(&dc);
// Save the current point as the previous point
m_ptPrevPos = point;
}
}
///////////////////////
// MY CODE ENDS HERE
///////////////////////
CView::OnMouseMove(nFlags, point);
}

and the errors i got are:

——————-Configuration: Day10 – Win32 Debug——————–
Compiling…
Day10.cpp
Day10View.cpp
D:VC++6MSDev98MyProjectsDay10Day10View.cpp(76) : error C2039: ‘GetLine’ : is not a member of ‘CDay10Doc’
d:vc++6msdev98myprojectsday10day10doc.h(13) : see declaration of ‘CDay10Doc’
D:VC++6MSDev98MyProjectsDay10Day10View.cpp(78) : error C2027: use of undefined type ‘CLine’
d:vc++6msdev98myprojectsday10day10doc.h(12) : see declaration of ‘CLine’
D:VC++6MSDev98MyProjectsDay10Day10View.cpp(78) : error C2227: left of ‘->Draw’ must point to class/struct/union
D:VC++6MSDev98MyProjectsDay10Day10View.cpp(138) : error C2084: function ‘void __thiscall CDay10View::OnLButtonDown(unsigned int,class CPoint)’ already has a body
D:VC++6MSDev98MyProjectsDay10Day10View.cpp(188) : error C2027: use of undefined type ‘CLine’
d:vc++6msdev98myprojectsday10day10doc.h(12) : see declaration of ‘CLine’
D:VC++6MSDev98MyProjectsDay10Day10View.cpp(188) : error C2227: left of ‘->Draw’ must point to class/struct/union
Generating Code…
Compiling…
Day10Doc.cpp
Generating Code…
Error executing cl.exe.

Day10.exe – 6 error(s), 0 warning(s)