Arduino.ru

int led = 2;
boolean butt_flag = 0;
boolean butt ;
boolean led_flag = 0;
void setup() {
  pinMode(3,INPUT_PULLUP);
  pinMode(led, OUTPUT);
  Serial.begin(9600);
  pinMode(2,OUTPUT);
 
}

void loop() {
  digitalWrite(led, HIGH);  
  delay(50);                      
  digitalWrite(led, LOW);   
  delay(50);                 

  butt = !digitalRead(3);
  if ( butt == 1 &&  butt_flag == 0) {
    butt_flag = 1;
    Serial.println("Button pressed");
    led_flag = !led_flag;
    digitalWrite(2, led_flag);
  }
{  
  butt = !digitalRead(3);
}
  {
  if ( butt == 0 &&  butt_flag == 1) {

    butt_flag = 0;
     Serial.println("Button released");

}
 

exit status 1
expected '}' at end of input