**fig9_65.txt**

/* 1*/	// Assign Num and compute Parent.
/* 2*/	// Counter is global, and initialized to 1.
/* 3*/	// Num, Visited, and Parent are all global arrays.

/* 4*/	void
/* 5*/	Assign_Num( Vertex V )
/* 6*/	{
/* 7*/	    Num[ V ] = Counter++;
/* 8*/	    Visited[ V ] = TRUE;
/* 9*/	    for Each Vertex W Adjacent To V
/*10*/	        if( ! Visited[ W ] )
/*11*/	        {
/*12*/	            Parent[ W ]= V;
/*13*/	            Assign_Num( W );
/*14*/	        }
/*15*/	}