Replace use of deprecated C Standard library headers in C++ code.

Change-Id: I9fa6630c7e4bdb2897df34d417635d8c7d8253bc
Signed-off-by: Tyler Chatow <tchatow@gmail.com>
diff --git a/frc971/control_loops/drivetrain/drivetrain_uc.q.cc b/frc971/control_loops/drivetrain/drivetrain_uc.q.cc
index 5f8bce4..2a2870c 100644
--- a/frc971/control_loops/drivetrain/drivetrain_uc.q.cc
+++ b/frc971/control_loops/drivetrain/drivetrain_uc.q.cc
@@ -1,5 +1,6 @@
 #include "frc971/control_loops/drivetrain/drivetrain_uc.q.h"
-#include <inttypes.h>
+
+#include <cinttypes>
 
 namespace frc971 {
 namespace control_loops {