Program in linux in C language, use arguments.
Submit your solution as a plain-text file with a .c extension in the name.
Name timer - counts down to zero from a user supplied number.
Description
Displays a count down to zero from a number supplied by the user at the command line. Supports pausing and unpausing the countdown. Countdown is done by ones, one second at a time.
While the program is runnng, typing p will pause the countdown and typing u will unpause it. echoing of characters is disabled while the program is running.