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exam-basedir06/subjects/brackets/subject.en.txt

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+Assignment name  : brackets 
+Expected files   : *.c *.h
+Allowed functions: write
+--------------------------------------------------------------------------------
+
+Write a program that takes an undefined number of strings in arguments. For each
+argument, the program prints on the standard output "OK" followed by a newline 
+if the expression is correctly bracketed, otherwise it prints "Error" followed by
+a newline.
+
+Symbols considered as 'brackets' are brackets '(' and ')', square brackets '[' 
+and ']'and braces '{' and '}'. Every other symbols are simply ignored.
+
+An opening bracket must always be closed by the good closing bracket in the 
+correct order. A string which not contains any bracket is considered as a 
+correctly bracketed string.
+
+If there is no arguments, the program must print only a newline.
+
+Examples :
+
+$> ./brackets '(johndoe)' | cat -e
+OK$
+$> ./brackets '([)]' | cat -e
+Error$
+$> ./brackets '' '{[(0 + 0)(1 + 1)](3*(-1)){()}}' | cat -e
+OK$
+OK$
+$> ./brackets | cat -e
+$
+$>