#include using namespace std; template class myClass { public: myClass(size_t N) : m_capacity(N), m_data(new T[m_capacity]) {} myClass(std::initializer_list lstData) : m_capacity(lstData.size()), m_data(new T[m_capacity]) { //cout << m_capacity << endl; int i = 0; for (auto val : lstData) m_data[i++] = val; // change made here } ~myClass() { delete[] m_data; } struct myIterator { using iterator_category = std::random_access_iterator_tag; using difference_type = std::ptrdiff_t; using valueType = T; using pointerType = T*; using referenceType = T&; myIterator(pointerType ptr) : m_ptr(ptr) {} pointerType operator->() { return m_ptr; } referenceType operator*() { return *m_ptr; } myIterator& operator++() { ++m_ptr; return *this; } myIterator operator++(int) { myIterator copy = *this; ++(*this); return copy; } friend bool operator==(const myIterator& itA, const myIterator& itB) { return itA.m_ptr == itB.m_ptr; } friend bool operator!=(const myIterator& itA, const myIterator& itB) { return itA.m_ptr != itB.m_ptr; } private: pointerType m_ptr; }; // end of myIterator myIterator begin() { return myIterator(&m_data[0]); } myIterator end() { return myIterator(&m_data[m_capacity]); } private: // order of vairalbes changed size_t m_capacity; T* m_data; };// end of myClass int main() { //myClass obj(5); myClass obj({ 5,7,9,11,13,15,61 }); for (auto itr = obj.begin(); itr != obj.end(); ++itr) { cout << *itr << " "; } return 0; }