#include
#include
class ThreeD
{
int x,y,z;
public:
ThreeD(int i,int j,int k){
x=i;
y=j;
z=k;
}
friend ostream& operator<<(ostream& stream,ThreeD ob);
friend istream& operator>>(istream& stream,ThreeD ob);
};
ostream& operator<<(ostream& stream,ThreeD ob)
{
stream< return stream;
}
istream& operator>>(istream& stream,ThreeD ob)
{
stream>>ob.x>>ob.y>>ob.z;
return stream;
}
main()
{
ThreeD o1(1,2,3),o2(4,5,6);
ofstream out("test");
if(!out)
{
cout<<"Cannot open output file\n";
return 1;
}
cout< out.close();
ifstream in("test");
if(!in)
{
cout<<"Cannot open input file\n";
return 1;
}
ThreeD o3(0,0,0),o4(0,0,0);
in>>o3>>o4;
return 0;
}
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