Programming

class cv
{
 protected :
  struct state;
  state& m_state;
};

struct state
{
 m_size;
}

struct state
{
        variable_type m_size;
};

struct state
{
        m_size variablename;
};

class cv
{
 protected :
  struct state mystate;
  struct state &m_state;
};

#include "your-hdr-file.h" /*Header file where struct state is defined*/
class cv
{
 protected:
  struct state a;
  struct state &b;

public:
    cv(struct state &state_param):b(state_param)
    {
        ;
    }
    void access()
    {
        a.i = 1024;
        std::cout<<a.i<<"\n";
        std::cout<<b.i<<"\n";
    }
};

main()
{
    struct state s;
    s.i = 2048;

    cv obj1(s);
    obj1.access();
}