diff --git a/src/demo.cpp b/src/demo.cpp
index fc295c3..b160609 100644
--- a/src/demo.cpp
+++ b/src/demo.cpp
@@ -3 +3 @@
-#include <stdio.h>
+#include <cstdio>
@@ -4,0 +5,2 @@
+auto main() -> int
+{
@@ -6,6 +8,3 @@
-
-
-int main(){
-
-    for (;;) break;
-
+    for (;;) {
+        break;
+    }
@@ -18 +17,2 @@ int main(){
-    return 0;}
+    return 0;
+}
diff --git a/src/demo.hpp b/src/demo.hpp
index a429f5c..115b0de 100644
--- a/src/demo.hpp
+++ b/src/demo.hpp
@@ -6,3 +6,3 @@ class Dummy {
-    char* useless;
-    int numb;
-    Dummy() :numb(0), useless("\0"){}
+    char* useless { "\0" };
+    int numb { 0 };
+    Dummy() { }
@@ -10,2 +10,2 @@ class Dummy {
-    public:
-    void *not_useful(char *str){useless = str;}
+public:
+    auto not_useful(char* str) -> void* { useless = str; }