A simple c implementation by c++.

It can be interpreter and generate x86 32bit mode asm code also (in code_generator_refactor branch).

It is very simple, just support:

• char, int, pointer type
• function call
• if/else
• while
• // style comment
• printf (interpreter)

[eval expression] (http://test-template0.blogspot.tw/2016/07/smple-c-interpreter-1.html)

[display AST] (http://test-template0.blogspot.tw/2016/07/eval-12345.html)