Hello everybody,

I am a newly boost user and have a problem in the following code. Since it is long, i put only the relevant parts. Could anyone help me please? When I try to get the vertices from a vector and put them to add_edge(), i get the following error massage :

'boost::add_edge' : cannot convert parameter 1 from 'char' to 'void *'

The problematic part is highlighted.

Code:

typedef std::pair<char, char> Edge;

vector<Edge> simpleedgevector;

vector<Edge>::iterator s_e_i;

for(vec_it1 = output1.begin();vec_it1 !=output1.end();vec_it1++){

simpleedge = Edge((*(*vec_it1)),(*(*vec_it1+1)));

simpleedgevector.push_back(simpleedge);}

for(s_e_i = simpleedgevector.begin();s_e_i != simpleedgevector.end();s_e_i++){

edge_descriptor e; bool inserted;

cout<<"first part : "<<(*s_e_i).first<<" second part : "<<(*s_e_i).second<<endl;

tie(e, inserted) = add_edge((*s_e_i).first, (*s_e_i).second, g);

}