RE: iostream not visible in g++

RE: iostream not visible in g++

[Martin York]

 
Without the code its hard to say, but I bet its because all those
objects are in the standard namespace.

Try using  std::cout  std::endl etc.
Or adding a 'using' declaration in your source file.
NB Never put a 'using' declaration in a header file.


Martin

-----Original Message-----
From: gcc-help-owner@gcc.gnu.org [mailto:gcc-help-owner@gcc.gnu.org] On
Behalf Of deepak prabhas soi
Sent: 07 January 2005 06:18
To: gcc-help@gcc.gnu.org
Subject: iostream not visible in g++

Hi,
    I am running the gcc 3.4.2 . The .c files are compiling properly but
when using g++ for compilation of  c++ files,I can't compile even a
single line file.
Infact it gives problem in the inclusion of iostream.h file. what can be
error. How can i make these standard libraries visible to program.I am
getting the error as
  

iostream: No such file or directory
/hm/tmp.cpp: In function `int main()':
/hm/tmp.cpp:17: error: `cout' undeclared (first use this function)
/hm/tmp.cpp:17: error: (Each undeclared identifier is reported only once
for each function it appears in.)
/hm/tmp.cpp:17: error: `endl' undeclared (first use this function)


Can anybody please help me, how can i make these standard libraries to
be visible. I need it urgently.

regards
Prabhas

=====
If facts don't fit theory, change the facts
                                                        -Albert Einstein


		
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Re: iostream not visible in g++

[Christian Convey]

Hi,

IIRC, some release of GCC moved objects like "cout" from the global namespace to 
the std:: namespace.

So for code that use to look like this:
    #include <iostream>
    void foo() { cout << "Hello, World!" << endl;}

I now have the code look like this (by adding the 2nd line):
    #include <iostream>
    using namespace std;
    void foo() { cout << "Hello, World!" << endl;}


Alternatively, if I didn't want to use the statement "using namespace std;", I 
could instead write code as follows (by adding the "std::" prefix where necessary):
    #include <iostream>
    void foo() { std::cout << "Hello, World!" << std::endl;}


Hope this helps,
Christian


deepak prabhas soi wrote:
> Hi,
>     I am running the gcc 3.4.2 . The .c files are
> compiling properly but when using g++ for compilation
> of  c++ files,I can't compile even a single line file.
> Infact it gives problem in the inclusion of iostream.h
> file. what can be error. How can i make these standard
> libraries visible to program.I am getting the error as
>   
> 
> iostream: No such file or directory
> /hm/tmp.cpp: In function `int main()':
> /hm/tmp.cpp:17: error: `cout' undeclared (first use
> this function)
> /hm/tmp.cpp:17: error: (Each undeclared identifier is
> reported only once for each function it appears in.)
> /hm/tmp.cpp:17: error: `endl' undeclared (first use
> this function)
> 
> 
> Can anybody please help me, how can i make these
> standard libraries to be visible. I need it urgently.
> 
> regards
> Prabhas
> 
> =====
> If facts don't fit theory, change the facts
>                                                         -Albert Einstein
> 
> 
> 		
> __________________________________ 
> Do you Yahoo!? 
> The all-new My Yahoo! - Get yours free! 
> http://my.yahoo.com 
>  
> 

-- 
Christian Convey
Computer Scientist,
Naval Undersea Warfare Center
Newport, RI

Re: iostream not visible in g++

[Eljay Love-Jensen]

Hi Prabhas,

This worked for me:

#include <iostream>
int main()
{
     std::cout << "Hello world" << std::endl;
}

What's your source code?

HTH,
--Eljay

iostream not visible in g++

[deepak prabhas soi]

Hi,
    I am running the gcc 3.4.2 . The .c files are
compiling properly but when using g++ for compilation
of  c++ files,I can't compile even a single line file.
Infact it gives problem in the inclusion of iostream.h
file. what can be error. How can i make these standard
libraries visible to program.I am getting the error as
  

iostream: No such file or directory
/hm/tmp.cpp: In function `int main()':
/hm/tmp.cpp:17: error: `cout' undeclared (first use
this function)
/hm/tmp.cpp:17: error: (Each undeclared identifier is
reported only once for each function it appears in.)
/hm/tmp.cpp:17: error: `endl' undeclared (first use
this function)


Can anybody please help me, how can i make these
standard libraries to be visible. I need it urgently.

regards
Prabhas

=====
If facts don't fit theory, change the facts
                                                        -Albert Einstein


		
__________________________________ 
Do you Yahoo!? 
The all-new My Yahoo! - Get yours free! 
http://my.yahoo.com