#include <cstdlib>
#include <iostream>

using namespace std;

class K {
      public:
      float m_dana;
      
      K(float);
      K(K& a);
      K() {};
      K& operator=(const K& wzor);
      K& operator+(K a);
      bool operator==(K a);
      };

K :: K(float a) {
     m_dana = a;
     }
     
K :: K(K& a) {
     this->m_dana = a.m_dana;
     }
     
K& K :: operator=(const K& wzor) {
     // if(&wzor == this) return *this;
     this->m_dana = wzor.m_dana;
     return *this;
     }
     
K& K :: operator+(K a){
    K temp;
    temp.m_dana = a.m_dana + this->m_dana;
    return temp;
    }
    
bool K :: operator==(K a){
     if (this->m_dana == a.m_dana)
     return true;
     else return false;
     }


int main(int argc, char *argv[])
{
    K a, b(2.0f), c(a);
    cout<<"a = "<<a.m_dana<<endl<<"b = "<<b.m_dana<<endl<<"c = "<<c.m_dana<<endl;
    a = b;
    cout<<"a = b = "<<a.m_dana<<endl;
    c = (a + b);
    cout<<"c = "<<c.m_dana<<endl;
    bool bVal = (a == b);
    cout<<"bVal = "<<bVal<<endl;
    system("PAUSE");
    return EXIT_SUCCESS;
}