compile problem

[luke.yolanda@gmail.com]

I write a simple problem ,as:

*************** ***************
//temp.cpp
#include<iostre am.h>

int main(void){
cout<<"12313123 1";
return 0;
}
*************** **************


and when I type "gcc -o temp temp.cpp", it shows:

*************** *************** *
In file included from /usr/include/c++/4.0.2/backward/iostream.h:31,
from temp.cpp:1:
/usr/include/c++/4.0.2/backward/backward_warnin g.h:32:2: warning:
#warning This file includes at least one deprecated or antiquated
header. Please consider using one of the 32 headers found in section
17.4.1.2 of the C++ standard. Examples include substituting the <X>
header for the <X.h> header for C++ includes, or <iostream> instead of
the deprecated header <iostream.h>. To disable this warning use
-Wno-deprecated.
/tmp/cc2wKN3t.o: In function `main':
temp.cpp:(.text +0x25): undefined reference to `std::cout'
temp.cpp:(.text +0x2a): undefined reference to `std::basic_ost ream<char,
std::char_trait s<char> >& std::operator<< <std::char_trai ts<char>[color=blue]
>(std::basic_os tream<char, std::char_trait s<char> >&, char const*)'[/color]
/tmp/cc2wKN3t.o: In function `__tcf_0':
temp.cpp:(.text +0x47): undefined reference to
`std::ios_base: :Init::~Init()'
/tmp/cc2wKN3t.o: In function
`__static_initi alization_and_d estruction_0(in t, int)':
temp.cpp:(.text +0x74): undefined reference to
`std::ios_base: :Init::Init()'
/tmp/cc2wKN3t.o:(.eh _frame+0x11): undefined reference to
`__gxx_personal ity_v0'
collect2: ld returned 1 exit status

*************** *************** *

Could anyone tell me what teh problem is?

[Robert Gamble]

Re: compile problem

luke.yolanda@gm ail.com wrote:[color=blue]
> I write a simple problem ,as:
>
> *************** ***************
> //temp.cpp
> #include<iostre am.h>[/color]

Stop right there. The space goes *after* the comma.
And oh yeah, we don't discuss that C++ stuff here, different language,
different group, try comp.lang.c++.

Robert Gamble

[Keith Thompson]

Re: compile problem

"luke.yolanda@g mail.com" <luke.yolanda@g mail.com> writes:[color=blue]
> I write a simple problem ,as:
>
> *************** ***************
> //temp.cpp
> #include<iostre am.h>
>
> int main(void){
> cout<<"12313123 1";
> return 0;
> }
> *************** **************[/color]

This is C++, not C. I'd tell you to post to comp.lang.c++, but ...
[color=blue]
> and when I type "gcc -o temp temp.cpp", it shows:
>
> *************** *************** *[/color]
[snip][color=blue]
> /tmp/cc2wKN3t.o: In function `main':
> temp.cpp:(.text +0x25): undefined reference to `std::cout'[/color]
[snip]

it's a problem with your compilation environment, not with the
language. Try gnu.gcc.help.

--
Keith Thompson (The_Other_Keit h) kst-u@mib.org <http://www.ghoti.net/~kst>
San Diego Supercomputer Center <*> <http://users.sdsc.edu/~kst>
We must do something. This is something. Therefore, we must do this.

[santosh]

Re: compile problem

luke.yolanda@gm ail.com wrote:[color=blue]
> I write a simple problem ,as:
>
> *************** ***************
> //temp.cpp
> #include<iostre am.h>
>
> int main(void){
> cout<<"12313123 1";
> return 0;
> }
> *************** **************
>
>
> and when I type "gcc -o temp temp.cpp", it shows:[/color]

Just a wild guess, but why not try with the 'g++' command instead.
(Under DOS i.e. DJGPP, it is 'gpp')

For further C++ questions, please post to a C++ newsgroup like
comp.lang.c++ or alt.comp.lang.l earn.c-c++ etc.

[John Bode]

Re: compile problem


Cross-posted to comp.lang.c++, followups set to comp.lang.c++.

luke.yolanda@gm ail.com wrote:[color=blue]
> I write a simple problem ,as:
>
> *************** ***************
> //temp.cpp
> #include<iostre am.h>
>
> int main(void){
> cout<<"12313123 1";
> return 0;
> }
> *************** **************
>
>
> and when I type "gcc -o temp temp.cpp", it shows:
>
> *************** *************** *
> In file included from /usr/include/c++/4.0.2/backward/iostream.h:31,
> from temp.cpp:1:
> /usr/include/c++/4.0.2/backward/backward_warnin g.h:32:2: warning:
> #warning This file includes at least one deprecated or antiquated
> header. Please consider using one of the 32 headers found in section
> 17.4.1.2 of the C++ standard. Examples include substituting the <X>
> header for the <X.h> header for C++ includes, or <iostream> instead of
> the deprecated header <iostream.h>. To disable this warning use
> -Wno-deprecated.
> /tmp/cc2wKN3t.o: In function `main':
> temp.cpp:(.text +0x25): undefined reference to `std::cout'
> temp.cpp:(.text +0x2a): undefined reference to `std::basic_ost ream<char,
> std::char_trait s<char> >& std::operator<< <std::char_trai ts<char>[color=green]
> >(std::basic_os tream<char, std::char_trait s<char> >&, char const*)'[/color]
> /tmp/cc2wKN3t.o: In function `__tcf_0':
> temp.cpp:(.text +0x47): undefined reference to
> `std::ios_base: :Init::~Init()'
> /tmp/cc2wKN3t.o: In function
> `__static_initi alization_and_d estruction_0(in t, int)':
> temp.cpp:(.text +0x74): undefined reference to
> `std::ios_base: :Init::Init()'
> /tmp/cc2wKN3t.o:(.eh _frame+0x11): undefined reference to
> `__gxx_personal ity_v0'
> collect2: ld returned 1 exit status
>
> *************** *************** *
>
> Could anyone tell me what teh problem is?[/color]

Change iostream.h to just iostream, and either change cout to std::cout
or use a using clause:

#include <iostream>

int main(void)
{
std::cout << "123131231" << std::endl; // wouldn't hurt to throw an
EOL in here
return 0;
}

or

#include <iostream>

using std::cout;
using std::endl;

int main(void)
{
cout << "123131231" << endl;
}