map associative array

/*********************************************************************** * File : map.cpp * Author : Saurabh Gupta * Desc : associative arrays c++ * Source : http://saurabhgupta0527.blogspot.com/2011/10/standard-template-library.html * Created : AM 12:53 27 November 2011 * Note : ************************************************************************/ #include <iostream> #include <map> #include <string> using namespace std; int main() { /* type of the container: * - map: elements key/value pairs * - string: keys have type string * - float: values have type float */ typedef map<string,float> StringFloatMap; StringFloatMap coll; //insert some elements into the collection coll["VAT"] = 0.15; coll["Pi"] = 3.1415; coll["an arbitrary number"] = 4983.223; coll["Null"] = 0; /*print all elements * - iterate over all elements * - element member first is the key * - element member second is the value */ StringFloatMap::iterator pos; for (pos = coll.begin(); pos != coll.end(); ++pos) { cout << "key: \"" << pos->first << "\" " << "value: " << pos->second << endl; } } /* * OUTPUT * [sgupta@rhel6x64 stl]$ c++ map_as_associative_arrays.cpp -o map_as_associative_arrays [sgupta@rhel6x64 stl]$ ./map_as_associative_arrays key: "Null" value: 0 key: "Pi" value: 3.1415 key: "VAT" value: 0.15 key: "an arbitrary number" value: 4983.22 [sgupta@rhel6x64 stl]$ */