试图了解C ++在Arduino中对#pragma区域的使用

Question

I am using Arduino for interfacing with fingerprint module. I was trying to understand the code of fingerprint module. i know the purpose of pragma to instruct the compiler for operation. but i want to know how it is handled in Arduino. is it handled in linking file?

#pragma region -= Command_Packet Definitions =-
#pragma endregion
#pragma region -= Response_Packet Definitions =-
#pragma endregion

Answer 1

It is handled by preprocessor. All directives starting with # are.

#pragma region is common in MSVC code but may not be recognized by other compilers. #pragma s are often nonportable. So when coding, it's better to avoid #pragma .