// C++ code
//
void setup()
{
pinMode(4, OUTPUT);
pinMode(3, OUTPUT);
}
void loop()
{
digitalWrite(4,1);
digitalWrite(3,0);
delay(1000); // Wait for 1000 millisecond(s)
digitalWrite(3,1);
digitalWrite(4,0);
delay(1000); // Wait for 1000 millisecond(s)
}⚠️Content was pasted as plain text and auto-formatted as a code block. Use the Code Block button in the editor for proper formatting.