int RightBottom = 2;       //PinC
int RightTop = 3;          //PinB

int LeftBottom = 5;        //PinE
int LeftTop = 6;           //PinF

int CentreBottom = 8;      //PinD
int CentreMiddle = 9;      //PinG
int CentreTop = 10;        //PinA

int PointPin = 12;         //DP

int delayTime = 1000;
void setup() {

Serial.begin(9600);

pinMode(RightBottom, OUTPUT);
pinMode(RightTop, OUTPUT);

pinMode(LeftBottom, OUTPUT);
pinMode(LeftTop, OUTPUT);

pinMode(CentreBottom, OUTPUT);
pinMode(CentreMiddle, OUTPUT);
pinMode(CentreTop, OUTPUT);

pinMode(PointPin, OUTPUT);
}

void loop() {

int UserInput = Serial.parseInt();
int checkUserInput;


if (UserInput == 1 or 2 or 3 or 4 or 5 or 6 or 7 or 8 or 9 or 10; checkUserInput = UserInput) {
  if(UserInput > 10){                                 //ensures only numbers from 1 to 10 are passed through
    Serial.println("input only single digit numbers");
  } else{
    Serial.print("this is the inputVal ");
    Serial.println(checkUserInput);
    activateDigitalDisplay(checkUserInput);
  }
} 

}

void activateDigitalDisplay(int number) {
  Serial.println("custom function running");
  
  digitalWrite(RightBottom, LOW);
  digitalWrite(RightTop, LOW);
  digitalWrite(LeftBottom, LOW);
  digitalWrite(LeftTop, LOW);
  digitalWrite(CentreBottom, LOW);
  digitalWrite(CentreMiddle, LOW);
  digitalWrite(CentreTop, LOW);
  digitalWrite(PointPin, LOW);


  switch(number) {
    case 0:
      digitalWrite(RightBottom,HIGH);
      digitalWrite(RightTop,HIGH);
      digitalWrite(LeftBottom,HIGH);
      digitalWrite(LeftTop,HIGH);
      digitalWrite(CentreBottom,HIGH);
      digitalWrite(CentreTop,HIGH);
      
      digitalWrite(PointPin, HIGH);
      Serial.println("number 0 will be projected");
      break;
    case 1:
      digitalWrite(RightBottom,HIGH);
      digitalWrite(RightTop,HIGH);
      
      digitalWrite(PointPin, HIGH);
      Serial.println("number 1 will be projected");
      break;
    case 2:
      digitalWrite(CentreTop, HIGH);
      digitalWrite(RightTop, HIGH);
      digitalWrite(CentreMiddle,HIGH);
      digitalWrite(LeftBottom, HIGH);
      digitalWrite(CentreBottom, HIGH);
      
      digitalWrite(PointPin, LOW);
      Serial.println("number 2 will be projected");
      break;
    case 3:
      digitalWrite(CentreTop, HIGH);
      digitalWrite(RightTop, HIGH);
      digitalWrite(CentreMiddle,HIGH);
      digitalWrite(RightBottom, HIGH);
      digitalWrite(CentreBottom, HIGH);
      
      digitalWrite(PointPin, HIGH);
      Serial.println("number 3 will be projected");
      break;
    case 4:
      digitalWrite(LeftTop, HIGH);
      digitalWrite(CentreMiddle, HIGH);
      digitalWrite(RightTop,HIGH);
      digitalWrite(RightBottom, HIGH);
      
      digitalWrite(PointPin, LOW);
      Serial.println("number 4 will be projected");
      break;
    case 5:
      digitalWrite(CentreTop,HIGH);
      digitalWrite(LeftTop,HIGH);
      digitalWrite(CentreMiddle,HIGH);
      digitalWrite(RightBottom,HIGH);
      digitalWrite(CentreBottom,HIGH);
      
      digitalWrite(PointPin, HIGH);
      Serial.println("number 5 will be projected");
      break;
    case 6:
      digitalWrite(CentreTop,HIGH);
      digitalWrite(LeftTop,HIGH);
      digitalWrite(LeftBottom,HIGH);
      digitalWrite(CentreBottom,HIGH);
      digitalWrite(RightBottom,HIGH);
      digitalWrite(CentreMiddle,HIGH);
      
      digitalWrite(PointPin, LOW);
      Serial.println("number 6 will be projected");
      break;
    case 7:
      digitalWrite(CentreTop,HIGH);
      digitalWrite(RightTop,HIGH);
      digitalWrite(RightBottom,HIGH);

      digitalWrite(PointPin, HIGH);
      Serial.println("number 7 will be projected");
      break;
    case 8:
      digitalWrite(CentreTop,HIGH);
      digitalWrite(LeftTop,HIGH);
      digitalWrite(CentreMiddle,HIGH);
      digitalWrite(RightBottom,HIGH);
      digitalWrite(CentreBottom,HIGH);
      digitalWrite(LeftBottom,HIGH);
      digitalWrite(RightTop,HIGH);
      
      digitalWrite(PointPin, LOW);
      Serial.println("number 8 will be projected");
      break;
    case 9:
      digitalWrite(CentreTop,HIGH);
      digitalWrite(LeftTop,HIGH);
      digitalWrite(CentreMiddle,HIGH);
      digitalWrite(RightTop,HIGH);
      digitalWrite(RightBottom,HIGH);
      
      digitalWrite(PointPin, HIGH);
      Serial.println("number 9 will be projected");
      break;
    case 10:
        digitalWrite(RightBottom,HIGH);       //0
      digitalWrite(RightTop,HIGH);
      digitalWrite(LeftBottom,HIGH);
      digitalWrite(LeftTop,HIGH);
      digitalWrite(CentreBottom,HIGH);
      digitalWrite(CentreTop,HIGH);
      digitalWrite(CentreMiddle,0);
      digitalWrite(PointPin, HIGH);
delay(delayTime);

      digitalWrite(RightBottom,HIGH);   //1
      digitalWrite(RightTop,HIGH);
      digitalWrite(LeftBottom,0);
      digitalWrite(LeftTop,0);
      digitalWrite(CentreBottom,0);
      digitalWrite(CentreMiddle,0);
      digitalWrite(CentreTop,0);
      digitalWrite(PointPin, HIGH);
delay(delayTime);

      digitalWrite(CentreTop, HIGH);    //2
      digitalWrite(RightTop, HIGH);
      digitalWrite(CentreMiddle,HIGH);
      digitalWrite(LeftBottom, HIGH);
      digitalWrite(CentreBottom, HIGH);
      digitalWrite(RightBottom,0);
      digitalWrite(LeftTop,0);
      digitalWrite(PointPin, LOW);
delay(delayTime);

      digitalWrite(CentreTop, HIGH);    //3
      digitalWrite(RightTop, HIGH);   
      digitalWrite(CentreMiddle,HIGH);
      digitalWrite(RightBottom, HIGH);
      digitalWrite(CentreBottom, HIGH);
      digitalWrite(LeftBottom,0);
      digitalWrite(LeftTop,0);
      digitalWrite(PointPin, HIGH);
delay(delayTime);

      digitalWrite(LeftTop, HIGH);      //4
      digitalWrite(CentreMiddle, HIGH);
      digitalWrite(RightTop,HIGH);
      digitalWrite(RightBottom, HIGH);
      digitalWrite(LeftBottom,0);
      digitalWrite(CentreBottom,0);
      digitalWrite(CentreTop,0);
      digitalWrite(PointPin, LOW);
delay(delayTime);

      digitalWrite(CentreTop,HIGH);     //5
      digitalWrite(LeftTop,HIGH);
      digitalWrite(CentreMiddle,HIGH);
      digitalWrite(RightBottom,HIGH);
      digitalWrite(CentreBottom,HIGH);
      digitalWrite(RightTop,0);
      digitalWrite(LeftBottom,0);
      digitalWrite(PointPin, HIGH);
delay(delayTime);

      digitalWrite(CentreTop,HIGH);     //6
      digitalWrite(LeftTop,HIGH);
      digitalWrite(LeftBottom,HIGH);
      digitalWrite(CentreBottom,HIGH);
      digitalWrite(RightBottom,HIGH);
      digitalWrite(CentreMiddle,HIGH);
      digitalWrite(RightTop,0);
      digitalWrite(PointPin, LOW);
delay(delayTime);

      digitalWrite(CentreTop,HIGH);    //7
      digitalWrite(RightTop,HIGH);
      digitalWrite(RightBottom,HIGH);
      digitalWrite(LeftBottom,0);
      digitalWrite(LeftTop,0);
      digitalWrite(CentreBottom,0);
      digitalWrite(CentreMiddle,0);
      digitalWrite(PointPin, HIGH);
delay(delayTime);

      digitalWrite(CentreTop,HIGH);    //8
      digitalWrite(LeftTop,HIGH);
      digitalWrite(CentreMiddle,HIGH);
      digitalWrite(RightBottom,HIGH);
      digitalWrite(CentreBottom,HIGH);
      digitalWrite(LeftBottom,HIGH);
      digitalWrite(RightTop,HIGH);
      digitalWrite(PointPin, LOW);
delay(delayTime);

      digitalWrite(CentreTop,HIGH);    //9
      digitalWrite(LeftTop,HIGH);
      digitalWrite(CentreMiddle,HIGH);
      digitalWrite(RightTop,HIGH);
      digitalWrite(RightBottom,HIGH);   
      digitalWrite(LeftBottom,0);
      digitalWrite(CentreBottom,0);
      digitalWrite(PointPin, HIGH);
delay(delayTime); 
  }
}