#include #include template class array{ private: // array (pointer) T *arr; public: //constructor array(){ this->arr = new T[size]; } // copy constructor array(array &obj) : array(){ for(int i = 0; i < obj.length(); i++){ this->arr[i] = obj[i]; } } // size of array int length(){ return size; } // clear array void clear(){ for(int i = 0; i < size; i++){ arr[i] = 0; } } // safe index T at(const int index){ if(index >= 0 && index < size){ return arr[index]; } else{ throw std::runtime_error("Error: no such index\n"); } } T* begin(){ return arr; } T* end(){ return arr + size; } // initializer list support array(const std::initializer_list &lst) : array(){ // temp variable int count = 0; for(auto &el : lst){ arr[count] = el; count++; } } // overloaded operator [] T &operator [](const int index){ return arr[index]; } // overloaded operator = array &operator = (array &obj){ for(int i = 0; i < obj.length(); i++){ this->arr[i] = obj[i]; } return *this; } // overloaded operator == bool operator == (array &obj){ if(obj.length() != size){ return false; } int equal = 0; for(int i = 0; i < size; i++){ if(obj[i] == arr[i]){ equal++; } } if(equal == size){ return true; } return *this; } // overloaded operator > bool operator > (array &obj){ long int sum_this = 0; long int sum_obj = 0; for(int i = 0; i < size; i++){ sum_this += this->arr[i]; sum_obj += obj[i]; } if(sum_this > sum_obj){ return true; } else{ return false; } } // overloaded operator < bool operator < (array &obj){ long int sum_this = 0; long int sum_obj = 0; for(int i = 0; i < size; i++){ sum_this += this->arr[i]; sum_obj += obj[i]; } if(sum_this < sum_obj){ return true; } else{ return false; } } // overloaded operator >= bool operator >= (array &obj){ T sum_this = 0; T sum_obj = 0; for(int i = 0; i < size; i++){ sum_this += this->arr[i]; sum_obj += obj[i]; } if(sum_this >= sum_obj){ return true; } else{ return false; } } // overloaded operator <= bool operator <= (array &obj){ T sum_this = 0; T sum_obj = 0; for(int i = 0; i < size; i++){ sum_this += this->arr[i]; sum_obj += obj[i]; } if(sum_this <= sum_obj){ return true; } else{ return false; } } // overloaded operator + array &operator + (array &obj){ for(int i = 0; i < obj.length(); i++){ arr[i] += obj[i]; } return *this; } // overloaded operator += array &operator += (array &obj){ for(int i = 0; i < size; i++){ this->arr[i] += obj[i]; } } // overloaded operator -= array &operator -= (array &obj){ for(int i = 0; i < size; i++){ this->arr[i] -= obj[i]; } } // overloaded operator ++ (prefix) array &operator ++ (){ for(int i = 0; i < size; i++){ ++(this->arr[i]); } } // overloaded operator ++ (postfix) array &operator += (int postfix){ for(int i = 0; i < size; i++){ this->arr[i]++; } } // destructor ~array(){ delete[] arr; } }; int main(){ array arr {10, 71, 3, 6}; arr[3] = 10; std::cout << arr[3] << " " << arr.length() << " " << arr.at(3) << "\n"; array arr2 {10, 71, 3, 6}; array arr3 (arr); arr + arr2; arr = arr2; try{ arr.at(5); } catch(std::runtime_error &exc){ std::cout << exc.what() << "\n"; } arr.clear(); }

My <array>