Suggestion to avoid C style casting

[nuang-ee]

For more efficient code maintenance, I recommend to avoid C style casting (such as (struct struct_name *) void_ptr)

There are several reasons why C++ style casting should be used instead of C style casting. (Also mentioned in #56 too)

• C style castings are not checked at compile time and therefore causes some problem on runtime (And they are usually hard to debug)
• C++ style castings enhance the readability of the entire code by enabling searching code snippets by the common postfix _cast.
• C++ style castings support more precise casting, based on the context.

[hns10109]

의견 주셔서 감사합니다.
의견 주신대로 캐스팅 코딩 스타일을 C++로 변경/개선하는 것으로 검토하겠습니다.