Write a program that allows the user to convert a temperature given in degrees from either celsius to fahrenheit or fahrenheit to celsius. use the following formulas: degrees_c = 5(degrees_f− 32)/9 and degrees_f = (9(degrees_c)/5) + 32) prompt the user to enter a temperature and either a c or c for celsius or an f or f for fahrenheit. convert the temperature to fahrenheit if celsius is entered, or to celsius if fahrenheit is entered. display the result in a readable format. if anything other than c, c, f, or f is entered, print an error message and stop.

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?