**unf33c.txt**

/* 1*/	// Compute Fibonacci numbers as described in Chapter 1.

/* 2*/	unsigned long int
/* 3*/	Fib( const unsigned int N )
/* 4*/	{
/* 5*/	    if( N <= 1 )
/* 6*/	        return 1;
/* 7*/	    else
/* 8*/	        return Fib( N - 1 ) + Fib( N - 2 );
/* 9*/	}