Carothers David CS 230 10/9/07 Exercises Homework #4 1. What are the three main components of the STL? a. Containers b. Iterators c. Algorithms 2. What is the difference between an STL container and an STL iterator? a. While both are class templates, containers are used to manage objects of a given type, where as iterators are used to step through the elements of a container. 4. Write a statement that declares and stores the elements of the following array in to a vector object. Char vowls[5] = {`a','e','i','o','u'}; a. vector<char> charVowls[5] = {`a','e','i','o','u'}; 8. What is the output of the following program segment? (Assume the screen is an ostream iterator initialized to the standard device output to out put elements of the type int.) a. int list[5] = {2,4,6,8,10}; vector<int> vecList(5);//declares vecList copy(list, list + 5, vecList.begin());//(copy from(start), copy from (end), copy to(destination)) copy(vecList.begin(), vecList.end(), screen); cout << endl; OUTPUT: 246810 10. What is the output of the following program segment? (Assume the screen is an ostream iterator initialized to the standard output device to out put elements of the type int.) a. Int list[5] = {2,4,6,8,10}; Vector<int> vecList(7); Copy(list, list + 5, vecList.begin()); Veclist.push_back(12); Copy(vecList.begin(), vecList.end(), screen); Cout << endl; OUTPUT: 2,4,6,8,10,12