C++ overloading operator

[sturk]

I can't seem to get the correct output when overloading the *operator to find the dot product.
Would appreciate if anyone could help.

Correct output:
38.45

My output:
9.84

#include <iostream>
#include <complex>

class fvector2D: public std::complex<float>
{
public:
 
  fvector2D(float x=0, float y=0) : std::complex<float>(x, y)
{
	 
}

float X()const
{ 
return realm();
}

   float Y()const
  {
  return imagm();
}	
float operator* (fvector2D& factor)
{
      float result3;
      result3 = X() * factor.X();
      result3 += X() * factor.Y();
      return result3;
}
};

int main()
{
fvector2D v(3, 4.1f);
fvector2D u(1.2f, 8.5f);
std::cout << (a * d) << std::endl; //Finding of the dot product
}

[keskiverto]

You state that the dot product a*b is aX * bX + aX * bY


Why did you choose that a 2D vector IS-A complex number?

[ne555]

I think you should see it if you use simpler tests
for example, try u = (2, 100)
v = (1, 0)
v = (0, 1)
v = (0, 0)
v = (1, 1)

[sturk]

Thanks guys:)