About smart pointers exercise.

[chavid]

Even the part 1 seems to me out of reach for real beginners. I spent (too) much time trying to explain why they should care, andwhat can happen with an excepton raising, etc. Dynamic memory management is not a beginner topic. At least, move the exercise as the last one in the day 3 program.

[stale]

This issue or pull request has been automatically marked as stale because it has not had recent activity. Please manually close it, if it is no longer relevant, or ask for help or support to help getting it unstuck. Let me bring this to the attention of @klieret @wdconinc @michmx for now.