Graph implementation using c++?

Question

I need help implementing graph data structure using c++.
Some comments explaining how each code block works would really add some value.
Thanks.

Answer 1

Hope this may help...
https://www.sololearn.com/learn/656/?ref=app
https://www.sololearn.com/learn/667/?ref=app

Answer 2

Jayakrishna🇮🇳 Sure,thank you.