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//=======================================================================
// Copyright 2001 Jeremy G. Siek, Andrew Lumsdaine, Lie-Quan Lee,
//
// Distributed under the Boost Software License, Version 1.0. (See
// accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt)
//=======================================================================
#include <vector>
#include <string>
#include <iostream>
#include <boost/graph/stanford_graph.hpp>
#include <boost/graph/topological_sort.hpp>
int main()
{
using namespace boost;
const int n_vertices = 7;
Graph* sgb_g = gb_new_graph(n_vertices);
const char* tasks[]
= { "pick up kids from school", "buy groceries (and snacks)",
"get cash at ATM", "drop off kids at soccer practice",
"cook dinner", "pick up kids from soccer", "eat dinner" };
const int n_tasks = sizeof(tasks) / sizeof(char*);
gb_new_arc(sgb_g->vertices + 0, sgb_g->vertices + 3, 0);
gb_new_arc(sgb_g->vertices + 1, sgb_g->vertices + 3, 0);
gb_new_arc(sgb_g->vertices + 1, sgb_g->vertices + 4, 0);
gb_new_arc(sgb_g->vertices + 2, sgb_g->vertices + 1, 0);
gb_new_arc(sgb_g->vertices + 3, sgb_g->vertices + 5, 0);
gb_new_arc(sgb_g->vertices + 4, sgb_g->vertices + 6, 0);
gb_new_arc(sgb_g->vertices + 5, sgb_g->vertices + 6, 0);
typedef graph_traits< Graph* >::vertex_descriptor vertex_t;
std::vector< vertex_t > topo_order;
topological_sort(sgb_g, std::back_inserter(topo_order),
vertex_index_map(get(vertex_index, sgb_g)));
int n = 1;
for (std::vector< vertex_t >::reverse_iterator i = topo_order.rbegin();
i != topo_order.rend(); ++i, ++n)
std::cout << n << ": " << tasks[get(vertex_index, sgb_g)[*i]]
<< std::endl;
gb_recycle(sgb_g);
return EXIT_SUCCESS;
}
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