c++ - Template class with operator overload -

here question template class

aclass<int> a{1,2}; aclass<float> b{3.0,4.0}; aclass<int> c;  int main() {   c=a+b;   //how overload operator in simple way?   b=a;   //and this?   return 0; } 

how can overload operator handle template class different types? (sorry poor english)

you can have member function templates inside class template:

template <typename t> struct aclass {     aclass(aclass const &) = default;     aclass & operator=(const aclass &) = default;      template <typename u>     aclass(aclass<u> const & rhs) : a_(rhs.a_), b_(rhs.b_) {}      template <typename u>     aclass & operator=(aclass<u> const & rhs)     {         a_ = rhs.a_;         b_ = rhs.b_;         return *this;     }      t a_, b_; };