// tempexmp.C
// template example using vectors, iterators, and for_each()

#include <iostream>
#include <string>
#include <vector>
#include <algorithm>
using namespace std;

struct Person{
    string name;
    int age;
};

void ShowPerson(const Person &pp);
bool FillPerson(Person &pp);

int main()
{
    vector<Person> someone;
    Person temp;

    // using vectors without an iterator
    while(FillPerson(temp)){
	someone.push_back(temp);
    }
    int count = someone.size();
    for (int i = 0; i < count; i++){
	ShowPerson(someone[i]);
    }

    // using vectors with an iterator
    vector<Person>::iterator it;
    vector<Person> people;
    bool flag = true;

    while((flag = FillPerson(temp)) != false){
	people.push_back(temp);
    }
    for(it = people.begin(); it != people.end(); it++){
	ShowPerson(*it);
    }

    // use for_each to use ShowPerson()
    for_each(people.begin(), people.end(), ShowPerson);

    return EXIT_SUCCESS;
}

bool FillPerson(Person &pp){
    string str;
    bool flag = true;

    cout << "Enter a name (or quit to stop) -> ";
    getline(cin,str);
    if(str != "quit"){
	pp.name = str;
        cout << "Enter this person's age -> ";
        cin >> pp.age;
        cin.get();
    }else{
        flag = false;
    }
    return flag;
}

void ShowPerson(const Person &pp){
    cout << pp.name << " is " << pp.age << " years old.\n";
}