Help with blinking an led for 20 times then turn off for 4 seconds

[Burakimportant]

Greetings,

for(int i = 0; i<20;i++){

digitalWrite(yourLedpin,1);
delay(yourdelay);
digitalWrite(yourLedpin,0);
delay(yourdelay);
}
delay(4000); // delay 4 seconds

This should work.