Calling constructors in c++ without new

Question

I\'ve often seen that people create objects in C++ using

Thing myThing(\"asdf\");

Instead of this:

Thing myThing = Thing(\"         


        

Answer 1

Both lines are in fact correct but do subtly different things.

The first line creates a new object on the stack by calling a constructor of the format Thing(const char*).

The second one is a bit more complex. It essentially does the following

1. Create an object of type Thing using the constructor Thing(const char*)
2. Create an object of type Thing using the constructor Thing(const Thing&)
3. Call ~Thing() on the object created in step #1