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Assignment name  : aff_last_param
Expected files   : aff_last_param.c
Allowed functions: write
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Write a program that takes strings as arguments, and displays its last
argument followed by a newline.

If the number of arguments is less than 1, the program displays a newline.

Examples:

$> ./aff_last_param "Zelda" "is" "a" "boy" | cat -e
boy$
$> ./aff_last_param "I read this on internet !" | cat -e
I read this on internet !$
$> ./aff_last_param | cat -e
$