Cant use std lib.

  • Thread starter Thread starter G123456
  • Start date Start date
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G123456

I am using Microsoft Visual Studio 2005 Prof.
I am (only) using the C++ part of it (or i think so).

When i am compiling my code i get the error "error C2653: 'std' : is not a
class or namespace name"
If i try to use "using namespace std" i get the error "error C2871: 'std' :
a namespace with this name does not exist"

But if i write "std::" i get a list of posibilitis.

Whot am i doing wrong ?
Is there somthing missing under the installation ?

// G123456
 
G123456 said:
I am using Microsoft Visual Studio 2005 Prof.
I am (only) using the C++ part of it (or i think so).

When i am compiling my code i get the error "error C2653: 'std' : is not a
class or namespace name"
If i try to use "using namespace std" i get the error "error C2871: 'std'
: a namespace with this name does not exist"

But if i write "std::" i get a list of posibilitis.

Whot am i doing wrong ?
Click to expand...

What header files have you included?

The standard library comes with the compiler, but it is not part of it. You
must request it using #include just like any third-party library.
 
When i am compiling my code i get the error "error C2653: 'std' : is not a
class or namespace name"
If i try to use "using namespace std" i get the error "error C2871: 'std' :
a namespace with this name does not exist"
Click to expand...

What headers are you #include 'ing? You need to include the headers
which reference 'std::' before you can refer to it.

Nathan Mates
 
Nathan said:
What headers are you #include 'ing? You need to include the headers
which reference 'std::' before you can refer to it.
Click to expand...

....and, annoyingly, Intellisense knows about everything in std, even if you
haven't included the necessary headers. The compiler is not so clairvoyant.

-cd
 
Ben Voigt said:
What header files have you included?
Click to expand...
My headers look like:
#include <queue>
#include <vector>
#include <list> // bruges i funk_xyz
#include <iostream>
//#include <System>
#include "std"
#include "stdafx.h";
using namespace std;
 
Carl Daniel said:
...and, annoyingly, Intellisense knows about everything in std, even if
you haven't included the necessary headers. The compiler is not so
clairvoyant.

-cd
Click to expand...
My problems are: I wont to make use of a queue of userdefind types

I think this will do it :
std::queue <char> q1;
queue<int> Koe; // shoot have been: queue<koeType> Koe;

But booth lines generate the errors:
error C2143: syntax error : missing ';' before '<'
error C4430: missing type specifier - int assumed. Note: C++ does not
support default-int
 
G123456 said:
My headers look like:
#include <queue>
#include <vector>
#include <list> // bruges i funk_xyz
#include <iostream>
//#include <System>
#include "std"
#include "stdafx.h";
using namespace std;
It dosen�t matter of i use <std> or "std".
Click to expand...

G123456:

What is the file "std"?

If this is a "normal" project then #include "stdafx.h" should be the
first non-commented line in the file.

Can you demonstrate this problem in a simple single-file console
application? Try to reduce the problem to the most minimal content that
you can, and then post the whole code.
 
G123456 said:
My headers look like:
#include <queue>
#include <vector>
#include <list> // bruges i funk_xyz
#include <iostream>
//#include <System>
#include "std"
#include "stdafx.h";
Click to expand...

If you have precompiled headers, then everything up to "stdafx.h" is
ignored. The compiler, instead of processing all the headers, uses the
precompiled data frozen after compiling stdafx.cpp. Add your #include
statements to stdafx.h instead of your .cpp file, then they will be included
in the precompiled data.
 
My problems are: I wont to make use of a queue of userdefind types

I think this will do it :
std::queue <char> q1;
queue<int> Koe; // shoot have been: queue<koeType> Koe;

But booth lines generate the errors:
error C2143: syntax error : missing ';' before '<'
error C4430: missing type specifier - int assumed. Note: C++ does not
support default-int
Click to expand...

Have you #included <queue>?

Are you compiling a .cpp file? (If the file's extension is .c or .C, it
will be compiled as C, not C++).

-cd
 
Ben Voigt said:
If you have precompiled headers, then everything up to "stdafx.h" is
ignored. The compiler, instead of processing all the headers, uses the
precompiled data frozen after compiling stdafx.cpp. Add your #include
statements to stdafx.h instead of your .cpp file, then they will be
included in the precompiled data.
Click to expand...

Hei Bent.

When i moved #include stdafh.h up in front,
lot of the errors dissapered - thanks for that idea.

//G123456
 
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