We will be using tinyxml2, a C++ parser library. You can check here the documentation page for the library.

Before getting started, we need to install tinyxml2 as an Arduino library. The procedure is very simple.

First, you need to navigate to the Arduino libraries folder in your computer. In my case, it is located on C:\Users\MyUserName\Documents\Arduino\libraries, but yours might differ.

On the libraries folder, create a new folder called tinyxml2. After this, go to the GitHub page of the library and download the tinyxml2.cpp and the tinyxml2.h files. Finally, paste them on the tinyxml2 folder you have just created.

Depending on the complexity of the problem, you have several options:

If XML processing takes place inside Arduino, because it supports a full operating system (e.g. Linux), you have several libraries, like https://xerces.apache.org/xerces-c/, but you should be aware of the limitations of resources.

What you mean with "translating a XML extracted code into a C++"?

@Rui Humberto Pereira I have a software of design blocs and circuits this circuit need to be implemented on my Arduino board (it provide an XML description of the circuit) so i need to translate this XML file to a code to be executed on the Arduino

Taki Eddine Seghiri , these blocs and circuits are electronic, with transistor, resistances, capacitors, etc?

That is, you intend to implement an electrónic circuit (hardware) in the Arduino, as software?

@Venkata Naga Rani i saw the library i tried it but i don't think it can be fitted into my use case

If you have like a tutorial on how to link between a with a function

@rui humberto Pereira no these are it concerns electro-technic like two blocs input go to a logical function for example Transfer function or Logical function (AND, OR, XOR ...ETC) than a result

Taki Eddine Seghiri , these circuits that you refer are combinations of logical operations to be implemented in software (using C++) and run in the Arduino?

If I'm correct, I recommend Xerces