Problem in returning value from a class

[amanyasin]

Bonjour,
Dear all

I am facing general programming related logical error. I want to access bolean variable of the class by using get method. but it is not giving the right result. When i read the counter and boolean variable by getcount() and isPathExist() methods. Each time it returns "0" for counter and false for boolean.

My code is below

#include "AlgoPC.h"
#include <boost/graph/depth_first_search.hpp>


//=============================Depth First Search===========================
class DFSVisitor: public default_dfs_visitor
{
protected:
slBayesianNetwork *pBN;
int nodeA, nodeC;
bool exist;
int counter;

public:
DFSVisitor(slBayesianNetwork *pBN, int nodeA, int nodeC);
~DFSVisitor();
void discover_vertex(slNode u, const slGraph &g);
void resetCounter();
bool isPathExist();
int getCounter();

};
//--------------------------------------------------------------------------
DFSVisitor:FSVisitor(slBayesianNetwork *pBN, int nodeA, int nodeC)
{
this->pBN = pBN;
this->nodeA = nodeA;
this->nodeC = nodeC;
this->exist = false;
this->resetCounter();
}
//--------------------------------------------------------------------------
DFSVisitor::~DFSVisitor() { }
//--------------------------------------------------------------------------
void DFSVisitor::resetCounter()
{
this->counter = 0;

}
//--------------------------------------------------------------------------

//--------------------------------------------------------------------------
void DFSVisitor::discover_vertex(slNode u, const slGraph &g)
{
this->counter++;
unsigned int varIdx = this->pBN->getVariableIndex(u);

if ((varIdx == this->nodeC ) && ((this->counter) > 2))
{
this->exist = true;
cout<<"\n "<<counter<<" node = "<< varIdx+1;
}


}
//--------------------------------------------------------------------------
int DFSVisitor::getCounter()
{
return this->counter;
}
//--------------------------------------------------------------------------
bool DFSVisitor::isPathExist()
{
return this->exist;
}

====================== main program =======================

cout<< "\n a = "<<a<<" c = "<<c;
DFSVisitor vis(this->pBN, a , c);
depth_first_search((slGraph&)this->pBN->get_graph(),visitor(vis).root_vertex(vertex(a, this->pBN->get_graph())));
cout<<"\n counter is = "<<vis.getCounter()<<" Path exist = "<< vis.isPathExist();

======================== out put =========================

counter is = 0 path exist = 0 (false)

-------------------------------------------------------


I will be thankful to you for guiding me.

Best Regards

 

[cpjust]

Please use [ignore]

[/ignore] tags around code you post.

I have no idea what this line is doing:

depth_first_search((slGraph&)this->pBN->get_graph(),visitor(vis).root_vertex(vertex(a, this->pBN->get_graph())));

but if you aren't calling discover_vertex() anywhere, then I don't see how the bool value can change.