int btnPin1=7;
int btnPin2=1;
int btnPin3=4;
int btnState;
int ledPin1=8;
int ledPin2=2;
int ledPin3=3;

void setup() {
  // put your setup code here, to run once:
pinMode(btnPin1, INPUT);
pinMode(ledPin1, OUTPUT);
pinMode(btnPin2, INPUT);
pinMode(ledPin2, OUTPUT);
pinMode(btnPin3, INPUT);
pinMode(ledPin3, OUTPUT);
Serial.begin(9600);
}

void loop() {
  // put your main code here, to run repeatedly:
btnState= digitalRead(btnPin1);
Serial.println(btnState);
if(btnState==1){
  digitalWrite(ledPin1, HIGH);
}else{
  digitalWrite(ledPin1, LOW);
}
btnState= digitalRead(btnPin2);
Serial.println(btnState);
if(btnState==1){
  digitalWrite(ledPin2, HIGH);
}else{
  digitalWrite(ledPin2, LOW);
}
btnState= digitalRead(btnPin3);
Serial.println(btnState);
if(btnState==1){
  digitalWrite(ledPin3, HIGH);
}else{
  digitalWrite(ledPin3, LOW);
}
}