Construct an object of a complex class.
complex(const T& re = T(), const T& im = T()); complex(const complex&); template<class X> complex(const complex<X>&);
After construction real equal re and imag equals im.
An assignment operator for complex classes.
complex<T>& operator= (const T&); complex& operator= (const complex&);
template<class X> complex<T>& operator= (const complex<X>&);
Assigns a floating point type to the Cartesian complex class.