#include <iostream>
using std::cout;
using std::endl;

void f1(); 
void f2( void ); 

int main()
{
   f1(); 
   f2(); 
   return 0; 
} 

void f1()
{
   cout << "f1 takes no arguments" << endl;
}
void f2( void )
{
   cout << "f2 also takes no arguments" << endl;
}
