using namespace System;
using namespace System::Collections::Generic;
using namespace System::Linq;

public ref class Abiturient
{
public:
    property String^ LastName;
    property String^ Address;
    property Double AverageGrade;
    Abiturient(String^ ln, String^ a, Double ag)
    {
        LastName = ln;
        Address = a;
        AverageGrade = ag;

    }

    ~Abiturient()
    {
    }

};

ref class Filter
{
private: double _value;

public:
    Filter(double value): _value(value) {}
    bool Predicate(Abiturient ^a)
    {
        return a->AverageGrade > _value;
    }
};

int main(array<System::String ^> ^args)
{
    auto abiturients = gcnew List<Abiturient^>();
    auto filter = gcnew Filter(2.0);
    auto filtered = Enumerable::Where(abiturients, gcnew Func<Abiturient^, bool>(filter->Predicate));
}