You’re writing in C/C++, using a library of functions with a fairly consistent API. There is no “Arduino language” and your “.ino” files are three lines away from being standard C++.

The C language allows you to provide a pointer to a function, just like a pointer to a variable. In both cases, a C pointer contains the address and the type information about the entity being pointed ...

A software failure due to an invalid string of characters is common in any software system, but it is a critical one in an embedded software written in C language because it frequently manipulates ...