Is my implementation of datastructure Queue Correct

Question

https://code.sololearn.com/cLrjI7IWKGz6/?ref=app

Answer 1

Can u better explain as I'm beginner

Answer 2

How head should be adjust

Answer 3

How head should be adjust

Answer 4

I know that I need to clear memory in dequeue but IDK the function name to do it

Answer 5

Tysm but ptr=prt.pointer is not preferred can u tell me y? What happen if it is local variable I just have doubt about this portion only