Create a class named salesperson. data fields for salesperson include an integer id number and a double annual sales amount. methods include a constructor that requires values for both data fields, as well as get and set methods for each of the data fields. write an application named demosalesperson that declares an array of 10 salesperson objects. set each id number to and each sales value to zero. display the 10 salesperson objects.

In a unit cell of fcc structure, indicate the position of one of the tetrahedral interstitial sites by plotting the corresponding tetrahedron. do the same for one of the octahedral interstitial sites (in a separate fcc unit cell). mark the positions of all the tetrahedral and octahedral interstitial sites in the unit cells. how many equivalent tetrahedral sites and how many equivalent octahedral sites are contained in a fcc unit cell, respectively. what is the coordination number for a tetrahedral site and what is the coordination number for an octahedral site?