diff --git a/examples/c++/hm11.cxx b/examples/c++/hm11.cxx
index 61b25e5b..faf80ee6 100644
--- a/examples/c++/hm11.cxx
+++ b/examples/c++/hm11.cxx
@@ -40,7 +40,7 @@ void printUsage(char *progname)
        << endl;
   cout << "sent to the module and the response is printed out." << endl;
   cout << endl;
-  cout << "If no argument is used, then the address and PIN of the module" 
+  cout << "If no argument is used, then the address and PIN of the module"
        << endl;
   cout << "are queried and the results printed out." << endl;
   cout << endl;
@@ -52,12 +52,12 @@ void sendCommand(upm::HM11* ble, char *cmd)
 {
   char buffer[BUFSIZ];
   ble->writeData(cmd, strlen(cmd));
-  
+
   // wait up to 1 second
   if (ble->dataAvailable(1000))
     {
       memset(buffer, 0, BUFSIZ);
-      
+
       ble->readData(buffer, BUFSIZ - 1);
       cout << "Returned: " << buffer << endl;
     }
@@ -71,7 +71,6 @@ void sendCommand(upm::HM11* ble, char *cmd)
 int main (int argc, char **argv)
 {
 //! [Interesting]
-  char buffer[BUFSIZ];
   // Instantiate a HM11 BLE Module on UART 0
 
   upm::HM11* ble = new upm::HM11(0);
diff --git a/examples/c++/lol.cxx b/examples/c++/lol.cxx
index 9cf71bd7..f58ae5ac 100644
--- a/examples/c++/lol.cxx
+++ b/examples/c++/lol.cxx
@@ -48,7 +48,6 @@ main(int argc, char **argv)
     sensor = new upm::LoL();
     signal(SIGINT, sig_handler);
 
-    unsigned char *buffer;
     //buffer = sensor->getFramebuffer();
     int x = 0, y = 0;
     while (!is_running) {
diff --git a/examples/c++/nrf8001-helloworld.cxx b/examples/c++/nrf8001-helloworld.cxx
index 39e9b792..1c63002b 100644
--- a/examples/c++/nrf8001-helloworld.cxx
+++ b/examples/c++/nrf8001-helloworld.cxx
@@ -80,7 +80,6 @@ Used to test the UART TX characteristic notification
 static uart_over_ble_t uart_over_ble;
 static uint8_t         uart_buffer[20];
 static uint8_t         uart_buffer_len = 0;
-static uint8_t         dummychar = 0;
 
 void
 sig_handler(int signo)
diff --git a/examples/c++/smartdrive.cxx b/examples/c++/smartdrive.cxx
index ab943fd6..9b2c2a86 100644
--- a/examples/c++/smartdrive.cxx
+++ b/examples/c++/smartdrive.cxx
@@ -44,8 +44,6 @@ sig_handler(int signo)
 int
 main(int argc, char **argv)
 {
-    float voltage = 0;
-
     std::cout << "SmartDrive demo is starting. Please make sure drive is connected to board" << std::endl;
     sleep(2); //Wait for 2 seconds in case you want to fix your h/w setup
     
diff --git a/examples/c++/tsl2561.cxx b/examples/c++/tsl2561.cxx
index 87f83393..d50c6dbf 100644
--- a/examples/c++/tsl2561.cxx
+++ b/examples/c++/tsl2561.cxx
@@ -30,7 +30,6 @@
 
 int main (int argc, char **argv)
 {
-    mraa_result_t error = MRAA_SUCCESS;
     upm::TSL2561 *sensor = NULL;
     int loopCount = 100;