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###Code Analysis

Code Analysis

See http://stackoverflow.com/questions/1452721/why-is-using-namespace-std-considered-bad-practice

See https://stackoverflow.com/questions/1452721/why-is-using-namespace-std-considered-bad-practice

Your understanding of a graph is fine. Your understanding of implementing them needs some work. The whole point of a class and encapsulation is to make sure the object keeps and maintains state. Access to the state is controlled so that it can not by manipulate incorrectly.

1. Are you giving ownership of the objects to the edge (unlikely).
2. Are the vertices going to be NULL (unlikely)

Your understanding of a graph is fine. Your understanding of implementing them needs some work. The whole point of a class and encapsulation is to make sure the object keeps and maintains state. Access to the state is controlled so that it can not be manipulated incorrectly.

1. Are you giving ownership of the objects to the edge (unlikely)?
2. Are the vertices going to be NULL (unlikely)?