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Assignment name  : rev_print
Expected files   : rev_print.c
Allowed functions: write
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Write a program that takes a string, and displays the string in reverse
followed by a newline.

If the number of parameters is not 1, the program displays a newline.

Examples:

$> ./rev_print "rainbow dash" | cat -e
hsad wobniar$
$> ./rev_print "Ponies are awesome" | cat -e
emosewa era seinoP$
$> ./rev_print | cat -e
$