Thread: Ninja's Software Challenge

I have a few questions:
May we search online for solutions to things we don't know how to do?
If so where is the limit? Like, it's ok to search for a function reference, but not for more complicated things, or?
Are we supposed to use everything you've written in your code, or can we change from type const char * to std::string if we wish?
When or if we complete the task, shall we post it here with code, post it here with link to code, or PM you with the code or a link to it?

Edit: Also, you've written the wrong description in challenge 5.