just reformat the source...

src/main.cpp

@@ -1,13 +1,14 @@
 #include <Arduino.h>
 
-void setup() {
+void setup()
+{
   pinMode(LED_BUILTIN, OUTPUT);
   pinMode(PIN0, OUTPUT);
 
   digitalWrite(PIN0, HIGH);
 
-  int i=30;
-  while (i-->0)
+  int i = 30;
+  while (i-- > 0)
   {
     digitalWrite(LED_BUILTIN, HIGH);
     delay(500);
@@ -17,8 +18,8 @@ void setup() {
 
   digitalWrite(PIN0, LOW);
 
-  i=25;
-  while (i-->0)
+  i = 25;
+  while (i-- > 0)
   {
     digitalWrite(LED_BUILTIN, HIGH);
     delay(100); /* code */
@@ -29,6 +30,7 @@ void setup() {
   digitalWrite(PIN0, HIGH);
 }
 
-void loop() {
+void loop()
+{
   delay(1000);
 }