#include <iostream>
struct X
{
     X(const char *) { std::cout  << 1; }
     X(const X&) {std::cout << 2;} //copy ctor;
     X(X&& ) {std::cout << 3;} //Move ctor;
};

X f(X a)
{
    return a; //a will be moved out of f calling X's move ctor
}

X g(const char* b)
{
    X c(b);
    return c;
}
int main()
{
   f("hello");
   g("hello");

   //prints 131 and not 1313
}