public static Complex_Number operator *(Complex_Number a, Complex_Number b)
{
Complex_Number result = new Complex_Number();
result.x = a.x * b.x - a.y * b.y;
result.y = a.x * b.y + b.x + a.y;
return(result);
}
public static Complex_Number operator -(Complex_Number a, Complex_Number b)
{
Complex_Number result = new Complex_Number();
result.x = a.x - b.x;
result.y = a.y - b.y;
return(result);
}