Write a C program clock that continuously reads lines from stdin and displays them as described above on the LED array. Lines will be of the form HH:MM:SS; HH will range from 0-23, MM and SS will range from 0-59, and the separating :: are mandatory. The program must be built from the following files:

1. (30 points) display.c : Should have at least the following functions:
   1. void display_time(int hours, int minutes, int seconds, pi_framebuffer_t *dev) : displays the time on device dev using the below helpers.
   2. void display_colons(pi_framebuffer_t *dev) : draws the colons
   3. void display_hours(int hours, pi_framebuffer_t *dev) : displays the hours on device dev as above
   4. void display_minutes(int minutes, pi_framebuffer_t *dev) : displays the minutes on device dev as above
   5. void display_seconds(int seconds, pi_framebuffer_t *dev) : displays the seconds on device dev as above