Hii to all.....Actually i got a project which contains C++ ,fortron programs header files,include files.I added this project under new project C++ simple hello world program and then i added all other files but now iam getting undefined reference to functions which are called from main() function and other functions also.i am using OPen SUSE 11.0 KDE 3.5 version please any one suggest me to add this project under which new project and option.and how to link header files also.Please its very urgent.

This sounds like a programming question more than a KDE question. Also, nobody can really help much unless you post what the error messages are. Are you using KDevelop? Also, KDE 3.5 is (please take this with a grain of salt) deprecated as far as I know. Mentioning exactly what you are trying to accomplish may also help - we may suggest alternatives or other applications with similar functionality.