... will represent 50,000, etc. See: http://en.wikipedia.org/wiki/Roman_ numerals or http://zh.wikipedia.org/wiki/%E7%BD%97%E9%A9%AC...
...outstr := outstr + 'IX'; end; writeln('The roman numeral of ', number, ' is : ', outstr) end.
...-Z0-9]*$/ matches for a string that has 0 or more alpha- numerals from the beginning to the end. (/.../ means ... is a pattern)...