OOP-8-MAP.cpp

#include <iostream>
#include <map>
#include <string>

using namespace std;

int main()
{
    map<string, int> populationMap;

    populationMap.insert(pair<string, int>("MH", 112));
    populationMap.insert(pair<string, int>("UP", 199));
    populationMap.insert(pair<string, int>("MP", 726));
    populationMap.insert(pair<string, int>("AP", 845));

    map<string, int>::iterator iter = populationMap.end();

    cout << "Size of populationMap:" << populationMap.size() << "\n";

    for (iter = populationMap.begin(); iter != populationMap.end(); ++iter)
    {
        cout << iter->first << ":" << iter->second << "million\n";
    }
    string state;
    cout << "\nEnter the state:";
    cin >> state;

    iter = populationMap.find(state);
    if (iter != populationMap.end())
        cout << state << "population is:" << iter->second << "million\n";
    else
        cout << "Key is not in populationMap";
        
    populationMap.clear();

    return 0;
}