problem with move ctor and dtor

Question

Line no 113 to 116
student g1(student("Larry"));//why move ctor is not called after overloaded ctor???
g1.display();
student g2 = "Delta";//Also here,why move ctor is not called after overloaded ctor???
g2.display();

Also why dtor is not called for unnamed temporary objects created just before display is invoked????

for more info, refer
https://code.sololearn.com/ca23a14A18A6/?ref=app

Answer 1

Copy elision dictates that a compiler has to omit copy/move constructors in some situations, in which case the instance is directly initialized. This is the case for both lines of code you mentioned, and also the reason no destructor is called; a temporary object was never constructed.
For more information, you can refer here:

https://en.cppreference.com/w/cpp/language/copy_elision

The following thread on StackOverflow is also aimed at an explanation of the topic:

https://stackoverflow.com/questions/12953127/what-are-copy-elision-and-return-value-optimization

Answer 2

Please tell me what's happening with me?
I am trying to attach my code but after attaching i see that that is a python code by Jeremy Petrie.
I have reattached my cpp code but again same problem .
Please help me

Answer 3

Now i closed app then reopened and reattached my code.
Now it's attached, fine.
But i don't know what was happening with me while attaching code,i attached my code ,but shows python code by Jeremy Petrie....