Homework/HW10/graph.cc
Graph::Graph(int nv)
{
    numVertices = 0;
    numEdges = 0;
    directed = false;
    if (nv > 0)
        init(nv);
}
// Default constructor - makes an empty undirected graph.
Default constructor - makes an empty undirected graph.
Default constructor - makes an empty undirected graph .
Graph::Graph(int nv)
{
    numVertices = 0;
    numEdges = 0;
    directed = false;
    if (nv > 0)
        init(nv);
}
Graph :: Graph ( int nv ) { numVertices = 0 ; numEdges = 0 ; directed = false ; if ( nv > 0 ) init ( nv ) ; }
Default constructor - makes an empty undirected graph.
Default constructor - makes an empty undirected graph .