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#include <iostream>
#include <typeinfo>
using MyUInt = unsigned int;
using MyLInt = long int;
template<class T>
struct myStruct {
//using type = MyLInt;
};
template<>
struct myStruct<double> {
using type = MyLInt;
};
template<>
struct myStruct<int> {
using type = MyUInt;
};
template<>
struct myStruct<float> {
using type = bool;
};
// define other mappings as needed...
/*
template<class T>
using myStruct_t = typename myStruct<T>::type;
*/
template<class T1, class T2 = typename myStruct<T1>::type>
T1 fn(const T2& arg){
std::cout << typeid(T2).name() << std::endl;
return T1(arg);
}
int main() {
std::cout << fn<int>(1) << std::endl;
std::cout << fn<double>(1) << std::endl;
std::cout << fn<float>(1) << std::endl;
return 0;
}
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