#include <iostream>
using namespace std;

template <class DynamicType>
DynamicType areaOfTheCircle(DynamicType radius)
{
    return 3.1415 * radius * radius;
}

int main()
{
    int x = 2;
    int result = areaOfTheCircle<int>(x);
    cout << "Area: " << result << endl;
    cout << "Result variable type: " << typeid(result).name() << endl;
    return 0;
}