This topic created in 5218 days ago, the information mentioned may be changed or developed.
reddit:http://www.reddit.com/r/programming/comments/oiieu/coding_with_paint/
stackoverflow:http://stackoverflow.com/questions/5508110/why-is-this-program-erroneously-rejected-by-three-c-compilers/5509143
看完碉堡了。。。。