const int pinLedA = 12;
const int pinLedB = 11;
const int pinLedC = 10;
const int pinLedD = 9;
const int pinLedE = 8;
const int pinLedF = 7;
const int pinLedG = 6;

const int pinPot = A0;

int var = 0;

void setup() {
pinMode(pinLedA, OUTPUT);
pinMode(pinLedB, OUTPUT);
pinMode(pinLedC, OUTPUT);
pinMode(pinLedD, OUTPUT);
pinMode(pinLedE, OUTPUT);
pinMode(pinLedF, OUTPUT);
pinMode(pinLedG, OUTPUT);
}
void loop() {
  var = map(analogRead(pinPot),0,1024,0,9);

  switch (var) {

case 0:
digitalWrite(pinLedA, HIGH);
digitalWrite(pinLedB, HIGH);
digitalWrite(pinLedC, HIGH);
digitalWrite(pinLedD, HIGH);
digitalWrite(pinLedE, HIGH);
digitalWrite(pinLedF, HIGH);
digitalWrite(pinLedG, LOW);
break;

case 1:
digitalWrite(pinLedA, LOW);
digitalWrite(pinLedB, HIGH);
digitalWrite(pinLedC, LOW);
digitalWrite(pinLedD, LOW);
digitalWrite(pinLedE, LOW);
digitalWrite(pinLedF, LOW);
digitalWrite(pinLedG, LOW);
break;

case 2:
digitalWrite(pinLedA, HIGH);
digitalWrite(pinLedB, HIGH);
digitalWrite(pinLedC, LOW);
digitalWrite(pinLedD, HIGH);
digitalWrite(pinLedE, HIGH);
digitalWrite(pinLedF, LOW);
digitalWrite(pinLedG, HIGH);
break;

case 3:
digitalWrite(pinLedA, HIGH);
digitalWrite(pinLedB, HIGH);
digitalWrite(pinLedC, HIGH);
digitalWrite(pinLedD, HIGH);
digitalWrite(pinLedE, LOW);
digitalWrite(pinLedF, LOW);
digitalWrite(pinLedG, HIGH);
break;

case 4:
digitalWrite(pinLedA, LOW);
digitalWrite(pinLedB, HIGH);
digitalWrite(pinLedC, HIGH);
digitalWrite(pinLedD, LOW);
digitalWrite(pinLedE, LOW);
digitalWrite(pinLedF, HIGH);
digitalWrite(pinLedG, HIGH);
break;

case 5:
digitalWrite(pinLedA, HIGH);
digitalWrite(pinLedB, LOW);
digitalWrite(pinLedC, HIGH);
digitalWrite(pinLedD, HIGH);
digitalWrite(pinLedE, LOW);
digitalWrite(pinLedF, HIGH);
digitalWrite(pinLedG, LOW);
break;

case 6:
digitalWrite(pinLedA, HIGH);
digitalWrite(pinLedB, LOW);
digitalWrite(pinLedC, HIGH);
digitalWrite(pinLedD, HIGH);
digitalWrite(pinLedE, HIGH);
digitalWrite(pinLedF, HIGH);
digitalWrite(pinLedG, HIGH);
break;

case 7:
digitalWrite(pinLedA, HIGH);
digitalWrite(pinLedB, HIGH);
digitalWrite(pinLedC, HIGH);
digitalWrite(pinLedD, LOW);
digitalWrite(pinLedE, LOW);
digitalWrite(pinLedF, LOW);
digitalWrite(pinLedG, LOW);
break;

case 8:
digitalWrite(pinLedA, HIGH);
digitalWrite(pinLedB, HIGH);
digitalWrite(pinLedC, HIGH);
digitalWrite(pinLedD, HIGH);
digitalWrite(pinLedE, HIGH);
digitalWrite(pinLedF, HIGH);
digitalWrite(pinLedG, HIGH);
break;

case 9:
digitalWrite(pinLedA, HIGH);
digitalWrite(pinLedB, HIGH);
digitalWrite(pinLedC, HIGH);
digitalWrite(pinLedD, HIGH);
digitalWrite(pinLedE, LOW);
digitalWrite(pinLedF, HIGH);
digitalWrite(pinLedG, HIGH);
break;

  }

}