#include #include #include #include using namespace std;void show(const char *msg, map mp);int main() { map phonemap; phonemap["A"] = "444-555-1234"; phonemap["B"] = "555-555-6576"; phonemap["C"] = "555-555-9843"; show("Here is the original map: ", phonemap); phonemap["B"] = "555 555-5555"; cout << "New number: " << phonemap["B"] << endl; // Create a pair object that will contain the result of a call to insert(). pair::iterator, bool> result; // Use insert() to add an entry. result = phonemap.insert(pair("J", "555-9999")); if(result.second) cout << "J added."; show("phonemap after adding J: ", phonemap); return 0;}// Display the contents of a map by using an iterator.void show(const char *msg, map mp) { map::iterator itr; cout << msg << endl; for(itr=mp.begin(); itr != mp.end(); ++itr) cout << " " << itr->first << ": " << itr->second << endl; cout << endl;}