"Byte was not declared in this scope" Trying to add c++ file

[pb632146]

I am trying to bring in c++ code from another project into a new one, but it is not recognizing "byte"s, The dialect is on c++17 so what should I do? I don't really want to convert everything to unsigned char

[pb632146]

Any suggestion on what to do to make the compiler see byte?

[james246henry]

Hello @pb632146,
In C++17, std::byte was introduced as part of the standard library to represent raw byte data. If your code isn't recognizing byte, ensure you are including the correct header:

cpp

#include <cstddef> // for std::byte

By including this header, your project should properly recognize std::byte. This eliminates the need to convert every instance to unsigned char.


Best Regards,
James Henry

[pb632146]

I see, do I need to add std:: on to all the byte declarations? or is there a define I can do to avoid finding and adding every instance of byte

[pb632146 · Accepted solution]

Okay so it turns out that I should have noted that this is arduino code I am porting from , which uses byte as "uint8_t." Thank you for the help though it turns out that using the actual cstddef would be incorrect in this situation.