Can u explain me?

Question

I don't understand what is happening here
Mystring is class has only single attribute
char * str;
Also it has all ctors(default, overloaded, copy, move, dtor...)

In main.cpp

Mystring obj(Mystring("This is string"));

What is happening here?👆👆👆

Answer 1

Well, first you construct a temporary instance of Mystring using "This is string" as argument for the overloaded constructor, and afterwards, you construct a permanent instance from the temporary one. Since the first instance is about to be destroyed, this would invoke the move constructor. However, your compiler will probably optimize the line to a single call to the overloaded constructor.