Question

Given a class with a member template function like this one:

template <typename t>
class complex
{
public:
    complex(t r, t im);
    template<typename u>
    complex(const complex<u>&);
private:
    //what would be the type of real and imaginary data members here.
}

I am confused about member template functions, please provide an example by which the need of member template functions becomes clear to me.
Also, tell me the use of member template functions in c++, what are the situations where we use member template functions?

Answer 1

The general purpose and functionality of member function templates is in no way different from that of ordinary (non-member) function templates. The only [irrelevant] difference is that member functions have access to the implicit this parameter.

You understand the general purpose of ordinary function templates, do you? Well, in that case you should understand the general purpose of member function templates, because it is exactly the same.