int redled=2;
int greenled=3;
int but=4;
int butdeger;

void setup() {
  pinMode(redled, OUTPUT);
  pinMode(greenled, OUTPUT);
  pinMode(but, INPUT);
  Serial.begin(9600);
  // put your setup code here, to run once:
}
void loop() {
 butdeger=digitalRead(but);
 Serial.println(butdeger);
 if(butdeger==1) {
  digitalWrite(redled, HIGH);
  digitalWrite(greenled, LOW);
 }
 if (butdeger==0) {
  digitalWrite(redled, LOW);
  digitalWrite(greenled, HIGH);
 }
  // put your main code here, to run repeatedly:
}
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