How to make a questionnaire type website?

0 down vote favorite I am looking to Build a website that answers specific based on series of MCQ questions. for example:-

      http://ift.tt/1oGtXUH

      http://ift.tt/1NSDjEk

The second example is a more accurate version of what i am trying to build. I know php, C++. if anyone can tell me how these sites are build? or what specific methods they use, it will be great.