I am interested in making concise and well defined C++ library. Nowadays many companies or people develop big project. In that case, it is better for the company employees or the developer to focus on the important part of program. And less important part should be modularized and can be given to freelancer programmers like me. In this way, the program will be more independent and more likely to succeed. If you define input, output and the functionality of a class or library, I can make it for you.