A sample for map

map::insert, map::find, and map::end (STL Sample)@import url(MS-ITS:dsmsdn.chm::/html/msdn_ie4.css);

////////////////////////////////////////////////////////////////////////// Compile options needed: None//// <filename> :  main.cpp//// Functions:////      end//      find//      insert//////////////////////////////////////////////////////////////////////#pragma warning(disable:4786)#include <iostream>#include <string>#include <map>using namespace std;typedef map<int, string, less<int> > INT2STRING;void main(){// 1. Create a map of ints to strings    INT2STRING theMap;    INT2STRING::iterator theIterator;    string theString = "";    int index;// Fill it with the digits 0 - 9, each mapped to its string counterpart// Note: value_type is a pair for maps...    theMap.insert(INT2STRING::value_type(0,"Zero"));    theMap.insert(INT2STRING::value_type(1,"One"));    theMap.insert(INT2STRING::value_type(2,"Two"));    theMap.insert(INT2STRING::value_type(3,"Three"));    theMap.insert(INT2STRING::value_type(4,"Four"));    theMap.insert(INT2STRING::value_type(5,"Five"));    theMap.insert(INT2STRING::value_type(6,"Six"));    theMap.insert(INT2STRING::value_type(7,"Seven"));    theMap.insert(INT2STRING::value_type(8,"Eight"));    theMap.insert(INT2STRING::value_type(9,"Nine"));// Read a Number from the user and print it back as words    for( ; ; )    {        cout << "Enter /"q/" to quit, or enter a Number: ";        cin >> theString;        if(theString == "q")            break;        // extract each digit from the string, find its corresponding        // entry in the map (the word equivalent) and print it        for(index = 0; index < theString.length(); index++){            theIterator = theMap.find(theString[index] - '0');            if(theIterator != theMap.end() )    // is 0 - 9                cout << (*theIterator).second << " ";            else    // some character other than 0 - 9                cout << "[err] ";        }        cout << endl;    }} 

 

Program Output is:

Enter "q" to quit, or enter a Number: 22
Two Two
Enter "q" to quit, or enter a Number: 33
Three Three
Enter "q" to quit, or enter a Number: 456
Four Five Six
Enter "q" to quit, or enter a Number: q