Hello, My name is Pranav. I had sent an email on this mailing list earlier regarding some doubt in the implementation of the programming competency test for this project. I have gone ahead and written some code. The code is incomplete. Iterator code has not yet been written and container methods and some error handling is left. I would appreciate it if someone could review my code and tell me what else I will need to implement. #ifndef BOOST_VECTOR #define BOOST_VECTOR #include<exception> #include<iostream> struct exception_push_back_capacity_exceed : public std::exception { const char * what () const throw () { return "Vector Capacity Exceeded"; } }; namespace boost { template<typename T> class vector { public: vector(int); ~vector(); void push_back(T); T operator[](const int& pos) { return *(mem_start+pos); } private: T* mem_start; int size; int capacity; }; template<typename T> vector<T>::vector(int capacity_constr) { size=0; capacity=capacity_constr; mem_start = new T[capacity]; } template<typename T> vector<T>::~vector() { delete [] mem_start; } template<typename T> void vector<T>::push_back(T val) { try { if(size==(this->capacity)) { throw exception_push_back_capacity_exceed(); } mem_start[size++]=val; } catch(exception_push_back_capacity_exceed& e) { std::cout<<e.what()<<std::endl; } } } #endif As I am new to contributing for Open Source, I'm not sure if sending links on this mailing list is disrespectful or not. If it is I apologize for this. Code can be found on https://github.com/vaishious/boost.vector Thanks -Pranav