I have a function that gets a pointer , and it should then change that pointer to a new one, so void function (char *pointer) {    char data[40];   // some calculations    //send back respond     strcpy(pointer,data);   } I have read here that strcpy is a bad practice and that there are replacements(in Arduino? ) : http://stackoverflow.com/questions/12275381/strncpy-vs-sprintf What is the right command to change that pointer argument safely ?

Source: sprint or strcpy in arduino ?