int pb = 7;
int led =  6;
int pbState = 0;

void setup() 
{
  pinMode(led, OUTPUT);
  pinMode(pb, INPUT);
}

void loop() 
{
  pbState = digitalRead(pb);
  
  if (pbState == HIGH) 
  {
    digitalWrite(led, HIGH);
  } 
  else 
  {
    digitalWrite(led, LOW);
  }
}