#include <iostream>
#include <cmath>
using namespace std;
class punkt {
double _x, _y;
public:
punkt():_x(0),_y(0){}
punkt(double x, double y):_x(x), _y(y) {}
double &x() { return _x; }
const double &x() const { return _x; }
double &y() { return _y; }
const double &y() const { return _y; }
const double odleglosc( const punkt& a)const {
return sqrt( ((_x-a._x)*(_x-a._x) ) + ( (_y-a._y)*(_y-a._y) ));
}
};
class wielobok {
unsigned roz;
punkt* wsk;
public:
wielobok():roz(0), wsk(0){}
wielobok(const punkt* b,const punkt* e ):
roz(e-b), wsk(roz ? new punkt[roz]:0){
for(unsigned i=0;i<roz;++i)
wsk[i]=b[i];
}
~wielobok(){delete[]wsk;}
wielobok(const wielobok&);
wielobok& operator=(const wielobok &);
};
int main() {
punkt p(2, 3);
cout << p.x() << ' ' << p.y() << '\n';
p.x() = 1;
p.y() = 1;
cout << p.x() << ' ' << p.y() << '\n';
cout << p.odleglosc(punkt()) << '\n';
punkt t[] = { punkt(0, 1), punkt(0, 0), punkt(1, 0), punkt(1, 1) };
wielobok w1(t, t+4);
}
{"html5":"htmlmixed","css":"css","javascript":"javascript","php":"php","python":"python","ruby":"ruby","lua":"text\/x-lua","bash":"text\/x-sh","go":"go","c":"text\/x-csrc","cpp":"text\/x-c++src","diff":"diff","latex":"stex","sql":"sql","xml":"xml","apl":"apl","asterisk":"asterisk","c_loadrunner":"text\/x-csrc","c_mac":"text\/x-csrc","coffeescript":"text\/x-coffeescript","csharp":"text\/x-csharp","d":"d","ecmascript":"javascript","erlang":"erlang","groovy":"text\/x-groovy","haskell":"text\/x-haskell","haxe":"text\/x-haxe","html4strict":"htmlmixed","java":"text\/x-java","java5":"text\/x-java","jquery":"javascript","mirc":"mirc","mysql":"sql","ocaml":"text\/x-ocaml","pascal":"text\/x-pascal","perl":"perl","perl6":"perl","plsql":"sql","properties":"text\/x-properties","q":"text\/x-q","scala":"scala","scheme":"text\/x-scheme","tcl":"text\/x-tcl","vb":"text\/x-vb","verilog":"text\/x-verilog","yaml":"text\/x-yaml","z80":"text\/x-z80"}