#include <iostream>
using namespace std;
class ThreeD {
int x, y, z;
public:
ThreeD(int a, int b, int c) { x = a; y = b; z = c; }
// Make the inserter and extractor friends of ThreeD.
friend ostream &operator<<(ostream &stream, const ThreeD &obj);
friend istream &operator>>(istream &stream, ThreeD &obj);
};
// ThreeD inserter. Display the X, Y, Z coordinates.
ostream &operator<<(ostream &stream, const ThreeD &obj)
{
stream << obj.x << ", ";
stream << obj.y << ", ";
stream << obj.z << "\n";
return stream;
}
// ThreeD extractor. Get three-dimensional values.
istream &operator>>(istream &stream, ThreeD &obj)
{
stream >> obj.x >> obj.y >> obj.z;
return stream;
}
int main()
{
ThreeD td(1, 2, 3);
cout << "The coordinates in td: " << td << endl;
cout << "Enter new three-d coordinates: ";
cin >> td;
cout << "The coordinates in td are now: " << td << endl;
return 0;
}
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