int E=6; 
int D=5;
int C=4;
int B=3; 
int A=2;
int F=7;
int G=8;

void s0()
{
  digitalWrite(E,LOW);
  digitalWrite(D,LOW);
  digitalWrite(C,LOW);
  digitalWrite(B,LOW);
  digitalWrite(A,LOW);
  digitalWrite(F,LOW);
  digitalWrite(G,HIGH);
}

void s1()
{
  digitalWrite(E,HIGH);
  digitalWrite(D,HIGH);
  digitalWrite(C,LOW);
  digitalWrite(B,LOW);
  digitalWrite(A,HIGH);
  digitalWrite(F,HIGH);
  digitalWrite(G,HIGH);
}

void s2()
{
  digitalWrite(E,LOW);
  digitalWrite(D,LOW);
  digitalWrite(C,HIGH);
  digitalWrite(B,LOW);
  digitalWrite(A,LOW);
  digitalWrite(F,HIGH);
  digitalWrite(G,LOW);
}

void s3()
{
  digitalWrite(E,HIGH);
  digitalWrite(D,LOW);
  digitalWrite(C,LOW);
  digitalWrite(B,LOW);
  digitalWrite(A,LOW);
  digitalWrite(F,HIGH);
  digitalWrite(G,LOW);
}

void s4()
{
  digitalWrite(E,HIGH);
  digitalWrite(D,HIGH);
  digitalWrite(C,LOW);
  digitalWrite(B,LOW);
  digitalWrite(A,HIGH);
  digitalWrite(F,LOW);
  digitalWrite(G,LOW);
}

void s5()
{
  digitalWrite(E,HIGH);
  digitalWrite(D,LOW);
  digitalWrite(C,LOW);
  digitalWrite(B,HIGH);
  digitalWrite(A,LOW);
  digitalWrite(F,LOW);
  digitalWrite(G,LOW);
}




void setup()
{
    pinMode(E, OUTPUT);
    pinMode(D, OUTPUT);
    pinMode(C, OUTPUT);
    pinMode(B, OUTPUT);
    pinMode(A, OUTPUT);
    pinMode(F, OUTPUT);
    pinMode(G, OUTPUT);
}

void loop()
{

  	int SensorValue = analogRead(A0) / 200;
  
  	switch(SensorValue)
    {
      case 0: s0(); break;
      case 1: s1(); break;
      case 2: s2(); break;
      case 3: s3(); break;
      case 4: s4(); break;
      case 5: s5(); break;
      default: break;
    }
  
  delay(500);

}