g++ / IOStream? / Suse 8.1

[chris1480]

Hi,

I've got a somewhat strange problem. I updated my version of Suse to 8.1 recently and since then I'm not able to include the IOSTREAM header file anymore.
Even a simple hello world program complains that it doesn't know what COUT is.

I've also searched for the iostream file on my disk and the location is /usr/include/g++. I assume that's where it must be.
Under yast2 the C++ library libstd... is also installed.

Does anyone have an idea what's going wrong?


Thanks,
Chris

[bwkaz]

Add a using std::cout; line right after where you #include <iostream>. Alternately, you can replace every instance of "cout" with "std::cout", but that's a lot of work.

If you get undefined symbol errors with endl, for example, then add using std::endl; also.

[tecknophreak]

No, no, just use using namespace std; :D

Just messing with ya bwkaz.

[bwkaz]

GAAH!

:D

[chris1480]

Hi folks,

thanks for the tips, but unfortunately the error does not disappear. I've added the namespace stuff right after the #include command, under the #include command, but neither way it works :-(

Here's the program and the error message, if that's helping you to figure out the problem. To my opinion there isn't a whole lot one can do wrong.



#include <iostream> using namespace std;
int main () {
cout << "hello";
return 0;
}


$ g++ test.cc -o test

test.cc:1:21: warning: extra tokens at end of #include directive
test.cc: In function `int main()':
test.cc:6: `cout' undeclared (first use this function)
test.cc:6: (Each undeclared identifier is reported only once for each function it appears in.)
test.cc:10:2: warning: no newline at end of file



Besides, the same problem also appears in Mandrake 9.1, so I guess that it isn't a problem of the distribution, but rather a problem of the C/C++ compiler. Have they made any changes to the version 3 compiler?


Thanks again,
Chris

[tecknophreak]

Try this...

#include <iostream>

using namespace std;

int main () {
cout << "hello";
return 0;
}

[chris1480]

OK, it's working now.


I don't know why Mandrake still makes problems (it's not that important), but after wiping Suse and re-installing it, it suddenly works.
I have absolutely no idea what caused it.

I'd also tried your version before tecknophreak, but somehow the compiler still complained. After the re-install and with the namespace stuff it works perfectly now.


@all: Thanks for your help. I assume we can close that X-file now ;-)


Chris