C / C++ / MFC

class Cliness
{
public:
Cliness(void);
~Cliness(void);
int pt1;  // store the array location of the point which i construct the line
int pt2;  // store another one
};

class Cpointss
{
public:
Cpointss(void);
~Cpointss(void);
int line1;  // store the array location of the line made by this point
int line2; // can be empty if the point only create one line
};

std::vector<cliness>    m_arrayline;
std::vector<cpointss>    m_arraypoint;</cpointss></cliness>

m_arrayline[1].pt1 = 1;//line 1 make by point 1 & 2
m_arrayline[1].pt2 = 2;

m_arrayline[2].pt1 = 3;//line 2 make by point 3 & 4
m_arrayline[2].pt2 = 4;

m_arrayline[3].pt1 = 4;//line 3 make by point 4 & 5
m_arrayline[3].pt2 = 5;

m_arrayline[4].pt1 = 5;//line 4 make by point 5 & 6
m_arrayline[4].pt2 = 6;


m_arraypoint[1].line1 = 1;
m_arraypoint[1].line2 = NULL;// point 1 only connect to line1

m_arraypoint[2].line1 = 1;
m_arraypoint[2].line2 = NULL;// point 2 only connect to line1

m_arraypoint[3].line1 = 2;
m_arraypoint[3].line2 = NULL;// point 3 only connect to line2

m_arraypoint[4].line1 = 2;// point 4 connect to both line 2 & 3
m_arraypoint[4].line2 = 3;

m_arraypoint[5].line1 = 3;// point 5 connect to both line 3 & 4
m_arraypoint[5].line2 = 4;

m_arraypoint[6].line1 = 4;
m_arraypoint[6].line2 = NULL;// point 6 only connect to line4