Revert "Initial commit"

This reverts commit 3da7e684e9c3a15783843c41730d1312e7dca390.
Revert "Revert "Initial commit""

This reverts commit 9a5e33b9258cb56e0dec8e592050654c867b60eb.
Merge branch 'master' of https://github.com/naiveliujun/C-