move .h to .hpp

shader_example/flake.nix

@@ -20,7 +20,7 @@
 
         shellHook = ''
           echo "Run:"
-          echo 'g++ shader.cpp -o test -lglfw -lGLEW -lGL && ./test'
+          echo 'g++ shader.cpp -o shader -lglfw -lGLEW -lGL && ./shader'
         '';
       };
 

shader_example/shader.cpp

@@ -2,10 +2,10 @@
 #include <GLFW/glfw3.h>
 
 #define STB_IMAGE_IMPLEMENTATION
-#include "stb_image.h"
+#include "stb_image.hpp"
 
 #define STB_IMAGE_WRITE_IMPLEMENTATION
-#include "stb_image_write.h"
+#include "stb_image_write.hpp"
 
 #include <fstream>
 #include <vector>