A vertex u of a directed graph can end up in a depth-first tree containing only u, even though u has both outward and inward edges.

What type of printer is the fastest?

A) Impact B) 3-D C) Inkjet D) Laser

We wish to make a constructor for a Bar class that will only initialize two of its data members x and y to -1 and 0, respectively. The constructor we make should:

A. pass in two parameters by value B. pass in, by value, one struct object with two data members C. be a default constructor D. pass in two parameters by const reference