C4627 ошибка c

Good day

Newbie

Error on precompiled header.

\\ program

#include

main()

{



cout << «Hello Kitty!»;



return 0;

}

The function returns a warning C4627 due to the inclusion of the header #include <iostream.h> in the code.

Regardless of the header I utilize, I receive the identical warning.

#include <stdio.h> = error

#include <
stdafx.h
> = error

#include <iostream> = error

I attempted to reinstall on the C disk and then reset all settings through tools > import and export settings.

still errors

what does it mean ?

By default, pre-compiled headers are enabled. However, if you are not using a precompiled header, you can simply disable this option.

To modify the Precompiled Header option to «Not Using Precompiled Headers», follow these steps: right-click on the project, go to Properties, then Configuration Properties, C/C++, and finally Precompiled Headers.

I have this simple code:

std::ifstream ifs;
ifs.open ("test.txt", std::ifstream::in);
char c = ifs.get();
while (ifs.good()) {
   std::cout << c;
   c = ifs.get();
}
ifs.close();

However, I am encountering numerous errors, including:

Error   9   error C3083: 'ifstream': the symbol to the left of a '::' must be a type    test.cpp    
Error   8   error C2228: left of '.open' must have class/struct/union   test.cpp

and so on.

At the beginning of the file, I have included these definitions.

#include 
#include 
#include "stdafx.h"
using namespace std;

I am utilizing VS2012 for a console application.

edit1:

The complete code is as follow:

void ReadRawImages::Read(int frameNumber)
{
std::ifstream ifs;
      ifs.open ("test.txt", std::ifstream::in);
       char c = ifs.get();
       while (ifs.good()) {
            std::cout << c;
            c = ifs.get();
       }
  ifs.close();
 }

Additionally, I observed the presence of these warnings.

Warning 1   warning C4627: '#include ': skipped when looking for precompiled header use   test.cpp
Warning 2   warning C4627: '#include ': skipped when looking for precompiled header use    test.cpp

Place the header files following the

#include "stdafx.h"

declaration.

#include "stdafx.h"
#include 
#include 

The first included file, as per Microsoft’s specific rule, should always be

stdafx.h

.

By default, Visual C++ will only compile the code after the «#
include «stdafx.h
» in the source file if the compile option /Yu’stdafx.h’ is checked.

If your project is utilizing precompiled headers, ensure that the initial line of each

.cpp

file follows this format.

#include "stdafx.h"

Whatever the name of the header may be, or any other alternative name.

I am new to C++ STL and currently experimenting with it. My objective is to create a map-based multidimensional associative array.

typedef struct DA {
    string  read_mode;
    string  data_type;
    void    *pValue;
    void    *pVarMemLoc;
}DA;
int main()
{
    map>>>> DATA;
    DATA["lvl1"]["stg1"]["flr1"]["dep1"]["rom1"] = new DA;
    DATA["lvl1"]["stg1"]["flr1"]["dep1"]["rom2"] = new DA;
    DATA["lvl1"]["stg1"]["flr1"]["dep1"]["rom3"] = new DA;
    IEC["lvl1"]["stg1"]["flr1"]["dep1"]["rom1"]->read_mode = "file";
    IEC["lvl1"]["stg1"]["flr1"]["dep1"]["rom2"]->read_mode = "poll";
    IEC["lvl1"]["stg1"]["flr1"]["dep1"]["rom3"]->read_mode = "report";
    return 0;
}

Upon compiling the aforementioned code in VS2005, I encountered 170 C4503 warnings, all of which pertain to the «decorated name length exceeded, name was truncated» issue. Despite these warnings, the program appears to execute without any issues.

Would anyone be willing to provide me with an explanation of the reasons behind these warnings and share a solution? I appreciate your assistance in advance.

Warning 1   warning C4503: 'std::map<_Kty,_Ty>::~map' : decorated name length exceeded, name was truncated  c:\program files\microsoft visual studio 8\vc\atlmfc\include\cstringt.h 2121
Warning 2   warning C4503: 'std::map<_Kty,_Ty>::map' : decorated name length exceeded, name was truncated   c:\program files\microsoft visual studio 8\vc\atlmfc\include\cstringt.h 2121
Warning 3   warning C4503: 'std::map<_Kty,_Ty>::operator []' : decorated name length exceeded, name was truncated   c:\program files\microsoft visual studio 8\vc\atlmfc\include\cstringt.h 2121
Warning 4   warning C4503: 'std::_Tree<_Traits>::~_Tree' : decorated name length exceeded, name was truncated   c:\program files\microsoft visual studio 8\vc\atlmfc\include\cstringt.h 2121
Warning 5   warning C4503: 'std::map<_Kty,_Ty>::operator []' : decorated name length exceeded, name was truncated   c:\program files\microsoft visual studio 8\vc\atlmfc\include\cstringt.h 2121
Warning 6   warning C4503: 'std::_Tree<_Traits>::iterator::~iterator' : decorated name length exceeded, name was truncated  c:\program files\microsoft visual studio 8\vc\atlmfc\include\cstringt.h 2121
Warning 7   warning C4503: 'std::_Tree<_Traits>::iterator::iterator' : decorated name length exceeded, name was truncated   c:\program files\microsoft visual studio 8\vc\atlmfc\include\cstringt.h 2121

As per my research, I don’t support the idea of disabling the warning since it may lead to unintended consequences; therefore, I prefer to completely address the issue.

This is my approach to rewriting the code.

typedef struct DA {
    string  read_mode;
    string  data_type;
    void    *pValue;
    void    *pVarMemLoc;
}DA;
struct ROOM{
    map map;
};
struct DEPARTMENT{
    map map;
};
struct FLOOR{
    map map;
};
struct STAGE{
    map map;
};   
struct LEVEL{
    map map;
};   

and you could use it like this:

int main()
{
    LEVEL DATA;
    DATA.map["lvl1"].map["stg1"].map["flr1"].map["dep1"].map["rom1"] = new DA;
    DATA.map["lvl1"].map["stg1"].map["flr1"].map["dep1"].map["rom2"] = new DA;
    DATA.map["lvl1"].map["stg1"].map["flr1"].map["dep1"].map["rom3"] = new DA;
    ...
    etc

The source of my concerns and the eventual solution mainly come from MSDN.
«»».

If you have plans to retain this colossal
data structure
, there are limited options available to address the warning, except disabling it.

#pragma warning(disable:4503)

While some have proposed methods to disable the warning, I recommend reconsidering your design approach. Incorporate additional layers of abstraction beyond map^5, or modify the storage data structure. For instance, consider using map in place of map^5.

Updated:

Essentially, you have two choices in this scenario.

• You can utilize a key with an adjustable number of strings/levels as per your requirements.

  <p>
  <code>
  struct Key3 { std::string x, y, z; };
  </code>
  <code>
  typedef std::map&lt;Key3, DA*&gt; MyMap;
  </code>
  </p>

• Alternatively, you can create a generic structure in which each level has the ability to store either the DA* value or another level.

Announce in a manner that warrants attention, taking care to close the quotation marks.

map > > > > DATA;

The shift operator in C++ is recognized as

>>

.