**fig9_67.txt**

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

/* 3*/	void
/* 4*/	Find_Art( Vertex V )
/* 5*/	{
/* 6*/	    Visited[ V ] = TRUE;
/* 7*/	    Low[ V ] = Num[ V ] = Count++;		// Rule 1.
/* 8*/	    for Each Vertex W Adjacent To V
/* 9*/	        if( ! Visited[ W ] )		// Forward edge.
/*10*/	        {
/*11*/	            Parent[ W ] = V;
/*12*/	            Find_Art( W );
/*13*/	            if( Low[ W ] >= Num[ V ] )
/*14*/	                cout << V << " is an articulation point" << endl;
/*15*/	            Low[ V ] = Min( Low[ V ], Low[ W ] );	// Rule 3.
/*16*/	        }
/*17*/	        else
/*18*/	        if( Parent[ V ] != W )		// Back edge.
/*19*/	            Low[ V ] = Min( Low[ V ], Num[ W ] );	// Rule 2.
/*20*/	}