Add C, C++ to whitespace hooks

hooks.yaml

diff --git a/hooks.yaml b/hooks.yaml
index 8fcbe78..6286b9b 100644
--- a/hooks.yaml
+++ b/hooks.yaml
@@ -91,7 +91,7 @@
     description: Ensures that a file is either empty, or ends with one newline.
     entry: end-of-file-fixer
     language: python
-    files: \.(html|erb|slim|haml|ejs|jade|js|coffee|json|rb|md|py|css|scss|less|sh|tmpl|txt|yaml|yml|pp)$
+    files: \.(c|cpp|html|erb|slim|haml|ejs|jade|js|coffee|json|rb|md|py|css|scss|less|sh|tmpl|txt|yaml|yml|pp)$
 -   id: flake8
     name: Flake8
     description: This hook runs flake8.
@@ -121,4 +121,4 @@
     description: This hook trims trailing whitespace.
     entry: trailing-whitespace-fixer
     language: python
-    files: \.(html|erb|slim|haml|ejs|jade|js|coffee|json|rb|md|py|css|scss|less|sh|tmpl|txt|yaml|yml|pp)$
+    files: \.(c|cpp|html|erb|slim|haml|ejs|jade|js|coffee|json|rb|md|py|css|scss|less|sh|tmpl|txt|yaml|yml|pp)$