=============proj3.cpp===============
int main() {

return 0;
}
/*#include "quaternion.h"
int main (int argc, char *argv[])
{
	quaternion
				a = quaternion (1),
				b = quaternion (2, 5, 3.2, -2.15),
				c = quaternion (0, -2.1, -0.34, 1.035);
	cout << "a " << a << "  b " << b << "  c " << c << endl;
	cout << "b+c: " << b + c << endl;
	cout << "c-b: " << c - b << endl;
	cout << "b*c: " << b * c << endl;
	cout << "c*b: " << c * b << endl;
	quaternion d = b / c;
	cout << "b/c: " << d << " (and ans * c: " << d * c << ")\n";
	cout << "Mess: " << a + b / c - (b-a) / (a + c) << endl;
	return 0;
}
*/
=======================quaternion.cpp======================
#include "quaternion.h"
#include <iostream>
using namespace std;
foo foo()
{
    cout << "No arg was called";
}
foo::foo(int w=0, int x=0, int y=0, int z=0)
{
return w, x, y, z;
}
foo::foo(int a=0)
{
    cout << "1 arg was called";
}
================quaternion.h=================
#ifndef QUATERNION_H
#define QUATERNION_H
class foo {
    public:
    foo();
    foo(int w, int x, int y, int z);
    foo(int a);
    private:
        int a, w, x, y, z;
};
#endif // QUATERNION_H