C++

CLASS FRIEND

Complete the code below (f - j)

#include using namespace std;

class Vector3D { private : static const unsigned int dim = 3; double component [dim]; public : //a) vector3D(double a, double b, double c) { for(unsigned int i = 0; i

//c) friend Vector3D operator-(Vector3D &x, Vector3D &y) { Vector3D z; for(unsigned int i = 0; i

//d) friend istream& operator>>(istream& in, Vector3D &v) { for(unsigned int i = 0; i > v.component[i]; return in; }

//e) friend ostream& operator

Inside class vector 3D define (a) a standard constructor initialising a zero vector 0, (b) an overloaded friend unary operator returning for a vector x as operand the vector y = -x (opposite sign in all compo- nents), (c) an overloaded friend binary operator returning for two vectors x and the difference vector = x - y, (d) an overloaded friend binary input operator >> and (e) an overloaded friend binary output operator