in C++

Design a 2D vector class called Vec. Class Vec will contain two float data members x and y, a default constructor, a constructor from two coordinates, an add method, and a static member Vec object called null to represent the (0,0) null vector. Your Vec class should allow the vectors.cpp file to run without generating any error messages.

vectors.cpp

#include

#include "Vec.h"

using namespace std;

inline bool equal ( const Vec & u, const Vec& v ){

return u.x==v.x && u.y==v.y;

}

int main(int argc, const char * argv[])

{

Vec n, u(1.0f,2.0f);

if ( !equal(n,Vec::null) ) std::cout<<"error ";

for ( int i=0; i<10; i++ ) n.add ( u );

n.print();

if ( !equal(n,Vec(10.0f,20.0f)) ) std::cout<<"error ";

return 0;

}