public Main (String file, String function) {
BasicConfigurator.configure();
try {
Logger log = Logger.getLogger("Main");
log.debug("En la ejecucion de Main");
Program _p = parseFile(file);
_p.debug();
Machine _m = new Machine(_p);
_m.evaluate(function);
System.out.println(_m.printResult());
} catch ( ParsingException pe ) {
System.out.println("ERROR parseando el fichero");