0041_Class_Template_Specialization.cpp

#include <iostream>
using namespace std;
enum class Fruit { apple, orange, pear };
enum class Color { red, green, orange };

template <typename T> struct Traits;

// Define specializations for the Traits class template here.
template <> struct Traits<Fruit> {
    public:
    static string name(int i){
        switch (Fruit(i)) {
            case Fruit::apple: return "apple";
            case Fruit::orange: return "orange";
            case Fruit::pear: return "pear";
            default: return "unknown";
        }
    }
};

template <> struct Traits<Color> {
    public:
    static string name(int i){
        switch (Color(i)) {
            case Color::red: return "red";
            case Color::green: return "green";
            case Color::orange: return "orange";
            default: return "unknown";
        }
    }
};


int main()
{
	int t = 0; std::cin >> t;

    for (int i=0; i!=t; ++i) {
        int index1; std::cin >> index1;
        int index2; std::cin >> index2;
        cout << Traits<Color>::name(index1) << " ";
        cout << Traits<Fruit>::name(index2) << "\n";
    }
}