The problems are that you are freeing a pointer that may already have been freed, and you don't know how much space is in use don't have a pointer to the most recently allocated space (in general) so you can't free the memory accurately. In main() you have.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.