/**
* add a word to dictionary
*/
void addWord(Dict &d, const string &key, const string &value){
word w = {key, value};
if (!d.add(w))
cout << "Add failed.\n";
d.printDict();
}
void removeWord(Dict &d, const string &key){
d.remove(key);
d.printDict();
}
void updateWord(Dict &d, const word &w){
d.update(w);
d.printDict();
}
void searchWord(Dict &d, const string &description, const string &key){
cout << description << d.search(key) << endl;
d.printDict();
}