#include <iostream.h>
void f2();
void f1();
void main()
{ 
  cout << "f2:";
  f2();
  cout << "f1:";
  f1();
  cout << "f2:";
  f2 ();
}
void f1()
{ cout << "a" << endl;
}
void f2()
{ cout << "b" << endl;
}