[Dev-C++] Stupid question

[jansb000 <jan...@pl...>]

I feel a bit silly but somehow I seem to have forgotten a basic setting =
in DEVC++.

When I create a new project, using the templates for a console =
application, I can compile and run without any problem. (Note: the =
template contains the most simple main() with no functionality except =
waiting for a keypress).

Next when I add one line to main():
cout << "Hello world\n";
then compiling is ok but linking doesn't work anymore. I get the =
message:
[linker error] undefined reference to 'cout'

Is there a library that I have to include? How does this work?