C++ examples for STL:map
Demonstrate map used as associative array
#include <iostream> #include <string> #include <map> using namespace std; int main()//from ww w. ja v a 2 s . c o m { string name; int pop; string states[] = { "A", "B", "C","D", "E", "F"}; int pops[] = { 4, 2, 8, 7, 1, 9 }; map<string, int, less<string> > mapStates; //map map<string, int, less<string> >::iterator iter; //iterator for(int j=0; j<6; j++) { name = states[j]; //get data from arrays pop = pops[j]; mapStates[name] = pop; //put it in map } cout << "Enter state: "; //get state from user cin >> name; pop = mapStates[name]; //find population cout << "Population: " << pop << ",000\n"; cout << endl; //display entire map for(iter = mapStates.begin(); iter != mapStates.end(); iter++) cout << (*iter).first << ' ' << (*iter).second << ",000\n"; return 0; }