// by Bell /*Lists Challenge by Subham! Please don't post answers. A healthy discussion is welcome. Make a list that includes at least three people you’d like to invite to dinner. Then use your list to print a message to each person, inviting them to dinner. Add a print statement at the end of your program stating the name of the guest who can’t make it. • Modify your list, replacing the name of the guest who can’t make it with the name of the new person you are inviting. • Print a second set of invitation messages, one for each person who is still in your list. Add a printstatement to the end of your program informing people that you found a bigger dinner table. • Use insert() to add one new guest to the beginning of your list. • Use insert() to add one new guest to the middle of your list. • Use append() to add one new guest to the end of your list. • Print a new set of invitation messages, one for each person in your list */ #include #include #include #include using namespace std; //function for printing the elements in a list void showlist(list g) { list :: iterator it; for(it = g.begin(); it != g.end(); ++it) cout << '\t' << *it; cout << '\n'; } /* */ void printInvitations(list l1, list l2) { list::iterator it1 = l1.begin(); list::reverse_iterator it2 = l2.rbegin(); //for(it = g.begin(); it != g.end(); ++it) while(it1 != l1.end() && it2 != l2.rend()){ cout<<'\n'<<'\t' << *it1 << ", I would like to invite you to a pot-luck dinner party!"<<'\n'; cout<<"Could you bring your world-famous "<< *it2 <<"?"<<'\n'; cout << '\n'; it1++; it2++;} } int main(){ list guests({"Obi wan Kenobi","Han Solo ","Leia","Chewbacca","Luke"}); list food({"sushi","rathtar roast","vegan salad ","pan-galactic gargle blaster","curry"}); guests.push_back("Darth Vader"); food.push_front("strawberry chantilly"); cout<<"\nList 1 (guests) is : "; showlist(guests); cout<<"\nList 2 (food) is : "; showlist(food); printInvitations(guests,food); cout<<"Wait! I messed up the invitations, the signature dishes are all wrong!"<::iterator it = guests.begin(); // iterator to point to 3rd position advance(it, 2); // using insert to insert 1 element at the 3rd position guests.insert(it,"Emperor"); cout<<"\nPrinting again! At this rate, Endor is going to look like Tatooine "<<"\n"; printInvitations(guests,food); guests.merge(food); // (food is now empty) showlist(guests); showlist(food); //cout << "\nguests.front() : " << guests.front(); //cout << "\ninvertguests.back() : " << guests.back(); //cout << "\nguests.pop_front() : "; //guests.pop_front(); //showlist(guests); //cout << "\nfood.pop_back() : "; //food.pop_back(); //showlist(food); cout << "\nguests.sort(): "; guests.sort(); showlist(guests); cout<<"I found a bigger dinner table and also useful things about: "<<"\nlists in C++"<<"\n"<<"using several iterators simultaneously"<<"\n"<<"useful functions to manipulate lists"<<"\nthings I do not understand, like why sorting a list after merging keeps the original lists"<

listsCpp