// NHAP VAO TOA DO X,Y
//XUAT RA a(X,Y) VA DIEM DOI XUNG b(-X,-Y)
//TINH KHOANG CACH TU B -->0 #include
#include
#include
class diem
{ int x;
int y; public:
void gan(int, int);
void nhap();
void xuat();
int hoanhdo();
int tungdo();
diem doixung();
};
void diem::gan(int h,int t)
{ x=h;
y=t;
}
void diem::nhap()
{ cout<<"Hoanh do: ";
cin>>x;
cout<<"Tung do: ";
cin>>y;
}
void diem::xuat()
{ cout<<"("< }
int diem::tungdo()
{ return y;
}
int diem::hoanhdo()
{ return x;
}
diem diem::doixung()
{ diem kg;
kg.gan(-x,-y);
return kg;
}
int main()
{
diem a;
a.gan(3,4);
cout<<"a";
a.xuat();
cout< diem b;
b.nhap();
cout<<"b";
b.xuat();
cout< diem c;
c=b.doixung();
cout<<"Diem doi xung voi b: ";
c.xuat(); float kc;
kc=sqrt(b.tungdo()*b.tungdo()+b.hoanhdo()*b.hoanhdo());
cout<<"\nKhoang cach tu b den o la: "< getch();
return 0;
}