Dump of logical programming sample for learning purpose for

Question

i search Google but may be could not put right keyword so i am not getting a web site which help peole to learn programming by c,c++ or c# with many logical program like Fibonacci series or palindrome word or number and various kind of sorting etc.

so if anyone know about any web site from where we can see many program is there for learning purpose for beginner then please share the url. thanks