#include <iostream>
#include <type_traits>
#include <iostream>
using namespace std ;


template<typename T>
typename remove_reference<T>::type&& move_mine(T&& param) noexcept
{
    return static_cast<typename remove_reference<T>::type&&>(param);
}

void f1( int x1 )
{
  cout << "void f1( int x1 )" << endl ;
}

void f1( float x1 )
{
  cout << "void f1( float x1 )" << endl ;
}

float convertIntToFloat(  int a1 )
{
	return float(a1) ;
}

void f2( int& x1 )
{
  cout << "void f2( int& x1 )" << endl ;
}

void f2( int&& x1 )
{
  cout << "void f2( int&& x1 )" << endl ;
}



int main()
{
    int x1 = 10 ;
    int& ref_x1 = x1 ;

    f1( x1 ) ;
    f1 ( convertIntToFloat(x1 ) ) ;

    f2( x1 ) ;
    f2( move_mine( x1 ) ) ;


    return 0;
}