Data Structure in C++

I need help creating the arc and the biarc commands. Thank you

Implement the following commands Command Description create n r Create a new empty graph in register r, with n nodes print r Print some representation of the graph in r arc a b r In the graph in register r, create an arc from node a to b biarc a b r Create a bidirectional arc from a to b in r bfs a b r Perform a breadth-first search from a to b in r, printing the distance Write the register commands necessary to create the following graph: alpha place them in a comment in your source code. What is the distance from node 9 to node 6