Run these examples from the root directory of pycparser. Please note that most realistic C code samples would require running the C preprocessor before passing the code to **pycparser**; see the `README file <https://github.com/eliben/pycparser/blob/master/README.rst>`_ and `this blog post <https://eli.thegreenplace.net/2015/on-parsing-c-type-declarations-and-fake-headers>`_ more details.