კოლოქვიუმისთვის – ამოცანა 7

#include <iostream>
#include <fstream>
#include <string>

using namespace std;

class Island
{
private:
    string Name, Location;
    double Area;
public:
    Island()
    {
        Name = "Noname";
        Location = "Unknown";
        Area = 0.;
    };
    friend istream& operator>>(istream &cin, Island &isl)
    {
        cin >> isl.Name >> isl.Location >> isl.Area;
        return cin;
    };
    friend ostream& operator<<(ostream &cout, Island &isl)
    {
        cout << isl.Name << endl << isl.Location << endl;
        return cout;
    };
    friend Island maxArea(Island *a, int size)
    {
        Island &max = a[0];
        for (int i = 0; i < size; i++)
            if (a[i].Area > max.Area)
                max = a[i];
        return max;
    };
    Island(string N, string L, double A):Name(N), Location(L), Area(A){};
    ~Island(){};
};

int main()
{
    const int N = 29;
    Island *ptr = new Island[N];
    ifstream ifs("Islands.txt");
    Island isl;
    for (int i = 0; i < N; i++)
    {
        ifs >> isl;
        ptr[i] = isl;
    }
    ifs.close();
    cout << maxArea(ptr, N);
    delete [] ptr;
    ptr = NULL;
    system("PAUSE");
    return (0);
};