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exam-basedir06/subjects/brackets/subject.en.txt
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exam-basedir06/subjects/brackets/subject.en.txt
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Assignment name : brackets
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Expected files : *.c *.h
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Allowed functions: write
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--------------------------------------------------------------------------------
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Write a program that takes an undefined number of strings in arguments. For each
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argument, the program prints on the standard output "OK" followed by a newline
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if the expression is correctly bracketed, otherwise it prints "Error" followed by
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a newline.
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Symbols considered as 'brackets' are brackets '(' and ')', square brackets '['
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and ']'and braces '{' and '}'. Every other symbols are simply ignored.
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An opening bracket must always be closed by the good closing bracket in the
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correct order. A string which not contains any bracket is considered as a
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correctly bracketed string.
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If there is no arguments, the program must print only a newline.
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Examples :
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$> ./brackets '(johndoe)' | cat -e
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OK$
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$> ./brackets '([)]' | cat -e
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Error$
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$> ./brackets '' '{[(0 + 0)(1 + 1)](3*(-1)){()}}' | cat -e
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OK$
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OK$
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$> ./brackets | cat -e
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$
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$>
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exam-basedir06/subjects/brackets/subject.fr.txt
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exam-basedir06/subjects/brackets/subject.fr.txt
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Assignment name : brackets
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Expected files : *.c *.h
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Allowed functions: write
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--------------------------------------------------------------------------------
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Ecrire un programme qui prendra une chaine de caractères en paramètre et qui
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écrit sur la sortie standard 'OK' si l'expression est bien parenthesée et
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'Error' dans le cas contraire, le tout suivi d'une newline.
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Les symboles utilisés comme 'parenthèses' seront les parenthèses '(' et ')', les
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crochets '[' et ']' ainsi que les accolades '{' et '}'. Tous les autres
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caractères seront tout simplement ignorés.
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Une parenthèse ouvrante devra obligatoirement être fermée par une parenthèse
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fermante et dans le bon ordre (parenthèses imbriquées). Une chaine ne comportant
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aucune parenthèse est considerée comme bien parenthesée.
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Votre programme évaluera tous les arguments. Si aucun argument n'est fourni,
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il affichera seulement une newline.
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Exemples :
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$> ./brackets '(jo:qahndoe)' | cat -e
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OK$
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$> ./brackets '([)]' | cat -e
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Error$
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$> ./brackets '' '{[(0 + 0)(1 + 1)](3*(-1)){()}}' | cat -e
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OK$
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OK$
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$> ./brackets | cat -e
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$
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$>
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