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.