1) Write a C program that reads a hexadecimal value from the keyboard and then stores the value into an unsigned char variable. Read two int values p and n from the keyboard, where the values are less than 8. Implement the following commands: S – sets the n bits starting at position p to 11..1 R – resets the n bits starting at position p to 00…0 F – flips the n bits starting at position p to their inverse bit D – displays the value of the variable I – reads a new hexadecimal value from the keyboard2) Repeat exercise 1 using a variable of type unsigned int. Discuss the differences between the two programs.

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The volume v and paper surface area a of a conical paper cup are given by where r is the radius of the base of the cone and h is the height of the cone. a. by eliminating h, obtain the expression for a as a function of r and v. b. create a user-de ned function that accepts r as the only argument and computes a for a given value of v. declare v to be global within the function. c. for v ! 10 in.3 , use the function with the fminbnd function to compute the value of r that minimizes the area a. what is the corresponding value of the height h? investigate the sensitivity of the solution by plotting v versus r. how much can r vary about its optimal value before the area increases 10 percent above its minimum value?

Auser is given read permission to a file stored on an ntfs-formatted volume. the file is then copied to a folder on the same ntfs-formatted volume where the user has been given full control permission for that folder. when the user logs on to the computer holding the file and accesses its new location via a drive letter, what is the user's effective permission to the file? a. read b. full control c. no access d. modify e. none of the above