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1.1 KiB
1.1 KiB
brackets
Instructions
Write a program that takes an undefined number of strings in arguments. For each
argument, if the expression is correctly bracketed, the program prints on the standard output OK followed by a newline('\n'), otherwise it prints "Error" followed by
a newline.
Symbols considered as brackets are parentheses ( and ), square brackets [
and ] and curly 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 does not contain any bracket is considered as a
correctly bracketed string.
If there is no argument, the program must print only a newline.
Usage
student@ubuntu:~/student/brackets$ go build
student@ubuntu:~/student/brackets$ ./brackets '(johndoe)' | cat -e
OK$
student@ubuntu:~/student/brackets$ ./brackets '([)]' | cat -e
Error$
student@ubuntu:~/student/brackets$ ./brackets '' '{[(0 + 0)(1 + 1)](3*(-1)){()}}' | cat -e
OK$
OK$
student@ubuntu:~/student/brackets$ ./brackets | cat -e
$
student@ubuntu:~/student/brackets$