I'm starting to learn how to use Arduino and I try to make this code, which is just a simple if else statement, what I want to make is when the input is LOW, the led 1 is HIGH and led 2,3 is LOW. and when the input is HIGH, the led 2,3 is HIGH and LED 1 is LOW. I wrote this code but when I put the switch in LOW, instead having just like what I intended, all the output is HIGH.

I try changing the output and I checked all the wiring to the led so my mistake is in the code.

Could you guys tell me what's wrong with the code.

Thank you

int switchstate = 0; void setup() { pinMode (13,OUTPUT); pinMode(12,OUTPUT); pinMode(11,OUTPUT); pinMode(3,INPUT);   } void loop() { switchstate = digitalRead(3); if (switchstate == LOW){ digitalWrite(11,HIGH); digitalWrite(12,LOW); digitalWrite(13,LOW);   }  else{ digitalWrite(11,LOW); digitalWrite(12,HIGH); digitalWrite(13,HIGH); } } 

I'm starting to learn how to use Arduino and I tried to make this code, which is just a simple if else statement; what I want to make is when the input is LOW, LED 1 is HIGH and LEDs 2,3 are LOW, and when the input is HIGH, the LEDs 2,3 are HIGH and LED 1 is LOW. I wrote this code but when I put the switch in LOW, instead having just like what I intended, all the outputs are HIGH.

I try changing the output and I checked all the wiring to the LEDs so my mistake is in the code.

Could you guys tell me what's wrong with the code?

int switchstate = 0; void setup() {  pinMode (13,OUTPUT);  pinMode(12,OUTPUT);  pinMode(11,OUTPUT);  pinMode(3,INPUT); } void loop() {  switchstate = digitalRead(3);  if (switchstate == LOW) {  digitalWrite(11,HIGH);  digitalWrite(12,LOW);  digitalWrite(13,LOW);  } else {  digitalWrite(11,LOW);  digitalWrite(12,HIGH);  digitalWrite(13,HIGH);  } }