#include <iostream> #include <list> using namespace std; int main() { list<char> coll; // list container for character elements // append elements from 'a' to 'z' for (char c='a'; c<='z'; ++c) { coll.push_back(c); } /* print all elements * - while there are elements * - print and remove the first element */ while (! coll.empty()) { cout << coll.front() << ' '; coll.pop_front(); } cout << endl; }