#define sw1 2
#define sw2 4
#define out 5
#define numgate 16
int mode = 1;

void setup() {
  pinMode(sw1, INPUT);
  pinMode(sw2, INPUT);
  pinMode(out, OUTPUT);
  pinMode(numgate, INPUT);
  Serial.begin(115200);
}

void loop() {
  int i = digitalRead(numgate);
  if(i == 1){mode++;
  if (mode > 5) mode = 1;
  }

  switch (mode) {
    case 1:
      Serial.println("AND Gate");
      if(digitalRead(sw1)== HIGH && digitalRead(sw2)== HIGH ){
      digitalWrite(out, HIGH);}
      else{digitalWrite(out, LOW);}
      break;
     case 2:
      Serial.println("OR Gate");
        if(digitalRead(sw1) == HIGH | digitalRead(sw2)== HIGH ){
      digitalWrite(out, HIGH);}
        else{digitalWrite(out, LOW);}
      break;

    case 3:
      Serial.println("NOT Gate Swicth 1 only");
        if(digitalRead(sw1)== HIGH){
      digitalWrite(out, LOW);}
        else{digitalWrite(out, HIGH);}
      break;

    case 4:
      Serial.println("NAND Gate");
        if(digitalRead(sw1) == HIGH && digitalRead(sw2)== HIGH ){
      digitalWrite(out, LOW);}
        else{digitalWrite(out, HIGH);}
      break;

    case 5:
      Serial.println("NOR Gate");
        if(digitalRead(sw1)== HIGH | digitalRead(sw2)== HIGH ){
      digitalWrite(out, LOW);}
        else{digitalWrite(out, HIGH);}
      break;
  }
  delay(250);
}