#include <Servo.h>
#include <SevenSeg.h>
SevenSeg number (0,1,2,3,4,5,6);
const int numOfDigits =3;
int digitPins [numOfDigits]={8,9,10};
Servo servo;
int angle = 0;
const int button_go=13;
const int button_back=12;

void setup(){
  pinMode(12, INPUT_PULLUP);
  pinMode(13, INPUT_PULLUP);
  servo.attach(A0);
  number.setDigitPins ( numOfDigits , digitPins);
  number.setCommonAnode();
  number.setDutyCycle(50);
}

void loop(){
  if(digitalRead(button_go)==LOW){
    while(digitalRead(button_go)==LOW){delay(40);}
   if(angle<=135){angle=angle+45;}
  }else if(digitalRead(button_back)==0){
    while(digitalRead(button_back)==0){delay(40);}
    if(angle>=45)angle=angle-45;
  }  
  servo.write(angle);
  number.write(angle);
  }