#include <Streaming.h> // die Lib findest du selber ;-)
Print &cout = Serial; // cout Emulation für "Arme"

extern "C"
{
  unsigned geta();
  unsigned getb();
}


void setup() 
{
  Serial.begin(9600);
  cout << F("Start: ") << F(__FILE__)   << endl;
  cout << F("geta adresse: ") << geta() << endl;
  cout << F("getb adresse: ") << getb() << endl;
}

void loop() 
{

}