syntax: c++: add override keyword
diff --git a/syntax/c.nanorc b/syntax/c.nanorc
index 0553b6b..01053bf 100644
--- a/syntax/c.nanorc
+++ b/syntax/c.nanorc
@@ -7,7 +7,7 @@
color brightred "\<[A-Z_][0-9A-Z_]+\>"
color green "\<(float|double|bool|char|int|short|long|sizeof|enum|void|auto|static|const|struct|union|typedef|extern|(un)?signed|inline)\>"
color green "\<((s?size)|((u_?)?int(8|16|32|64|ptr)))_t\>"
-color green "\<(class|namespace|template|public|protected|private|typename|this|friend|virtual|using|mutable|volatile|register|explicit)\>"
+color green "\<(class|namespace|template|public|protected|private|typename|this|friend|virtual|override|using|mutable|volatile|register|explicit)\>"
color brightyellow "\<(for|if|while|do|else|case|default|switch)\>"
color brightyellow "\<(try|throw|catch|operator|new|delete)\>"
color magenta "\<(goto|continue|break|return)\>"