Use C++ 23

app/CMakeLists.txt

@@ -9,7 +9,7 @@ find_package(Zephyr REQUIRED HINTS $ENV{ZEPHYR_BASE})
 
 project(app LANGUAGES C)
 
-target_sources(app PRIVATE src/main.c)
+target_sources(app PRIVATE src/main.cpp)
 
 # The code below locates the git index file for this repository and adds it as a dependency for
 # the application VERSION file so that if the repo has a new commit added, even if no files in

app/prj.conf

@@ -3,5 +3,9 @@
 #
 # This file contains selected Kconfig options for the application.
 
+# C++
+CONFIG_CPP=y
+CONFIG_STD_CPP23=y
+
 CONFIG_SENSOR=y
 CONFIG_BLINK=y

app/src/main.cpp

@@ -10,10 +10,11 @@
 
 LOG_MODULE_REGISTER(main, CONFIG_APP_LOG_LEVEL);
 
-int main(void) {
+int main() {
   printk("Zephyr Example Application %s\n", APP_VERSION_STRING);
+  printk("Build with C++ standard: %ldL\n", __cplusplus);
 
-  while (1) {
+  while (true) {
     printk("Running...\n");
     k_sleep(K_SECONDS(5));
   }