#include	<iostream>

void Elk( int N );
void Kudu( int& N );
int Gnu( int M, int& N );

int main()
{
	int		i = 1;
	int		j = 2;

	Elk( i );
	Kudu( j );
	cout << "Elk & Kudu: " << i << " " << j << endl;

	i = 1;
	j = 2;
	int k = Gnu( Gnu( i, j ), i );

	cout << "Gnu: " << i << " " << j << " " << k << endl;

	return( 0 );
}

void Elk( int N )
{
	N = 3;
}

void Kudu( int& N )
{
	N = 4;
}

int Gnu( int M, int& N )
{
	N = 5;
	return( M + N );
}