maps.cpp

#include <iostream>
#include <map>
#include <string>
using namespace std;
int main()
{
    typedef map<string, int> mapType;
    mapType populationMap;
    populationMap.insert(pair<string, int>("Maharashtra", 7026357));
    populationMap.insert(pair<string, int>("Rajasthan", 6578936));
    populationMap.insert(pair<string, int>("Karanataka", 6678993));
    populationMap.insert(pair<string, int>("Punjab", 5789032));
    populationMap.insert(pair<string, int>("West Bengal", 6676291));
    mapType::iterator iter;
    cout << "========Population of states in India==========\n";
    cout << "\n Size of populationMap" << populationMap.size() << "\n";
    string state_name;
    cout << "\n Enter name of the state :";
    cin >> state_name;
    iter = populationMap.find(state_name);
    if (iter != populationMap.end())
        cout << state_name << " 's population is "
             << iter->second;
    else
        cout << "Key is not populationMap"
             << "\n";
    populationMap.clear();
}