void _0(){
digitalWrite(4, HIGH);
digitalWrite(5, HIGH);
digitalWrite(6, HIGH);
digitalWrite(7, HIGH);
digitalWrite(8, HIGH);
digitalWrite(9, HIGH);
digitalWrite(10, LOW);
}

void _1(){
digitalWrite(4, LOW);
digitalWrite(5, HIGH);
digitalWrite(6, HIGH);
digitalWrite(7, LOW);
digitalWrite(8, LOW);
digitalWrite(9, LOW);
digitalWrite(10, LOW);
}

void _2(){
digitalWrite(4, HIGH);
digitalWrite(5, HIGH);
digitalWrite(6, LOW);
digitalWrite(7, HIGH);
digitalWrite(8, HIGH);
digitalWrite(9, LOW);
digitalWrite(10, HIGH);
}

void _3(){
digitalWrite(4, HIGH);
digitalWrite(5, HIGH);
digitalWrite(6, HIGH);
digitalWrite(7, HIGH);
digitalWrite(8, LOW);
digitalWrite(9, LOW);
digitalWrite(10, HIGH);
}

void _4(){
digitalWrite(4, LOW);
digitalWrite(5, HIGH);
digitalWrite(6, HIGH);
digitalWrite(7, LOW);
digitalWrite(8, LOW);
digitalWrite(9, HIGH);
digitalWrite(10, HIGH);
}

void _5(){
digitalWrite(4, HIGH);
digitalWrite(5, LOW);
digitalWrite(6, HIGH);
digitalWrite(7, HIGH);
digitalWrite(8, LOW);
digitalWrite(9, HIGH);
digitalWrite(10, HIGH);
}

void _6(){
digitalWrite(4, HIGH);
digitalWrite(5, LOW);
digitalWrite(6, HIGH);
digitalWrite(7, HIGH);
digitalWrite(8, HIGH);
digitalWrite(9, HIGH);
digitalWrite(10, HIGH);
}

void _7(){
digitalWrite(4, HIGH);
digitalWrite(5, HIGH);
digitalWrite(6, HIGH);
digitalWrite(7, LOW);
digitalWrite(8, LOW);
digitalWrite(9, LOW);
digitalWrite(10, LOW);
}

void _8(){
digitalWrite(4, HIGH);
digitalWrite(5, HIGH);
digitalWrite(6, HIGH);
digitalWrite(7, HIGH);
digitalWrite(8, HIGH);
digitalWrite(9, HIGH);
digitalWrite(10, HIGH);
}

void _9(){
digitalWrite(4, HIGH);
digitalWrite(5, HIGH);
digitalWrite(6, HIGH);
digitalWrite(7, HIGH);
digitalWrite(8, LOW);
digitalWrite(9, HIGH);
digitalWrite(10, HIGH);
}


void angka(int nomor){
  // if(nomor==0) _0();
  // else if(nomor==1) _1();
  switch(nomor){
    
    case 0: _0(); break;
    case 1: _1(); break;
    case 2: _2(); break;
    case 3: _3(); break;
    case 4: _4(); break;
    case 5: _5(); break;
    case 6: _6(); break;
    case 7: _7(); break;
    case 8: _8(); break;
    case 9: _9(); break;
  }
}
void latihan1(void);

int hitung=0;

void setup() {
  // put your setup code here, to run once:
pinMode(4, OUTPUT);
pinMode(5, OUTPUT);
pinMode(6, OUTPUT);
pinMode(7, OUTPUT);
pinMode(8, OUTPUT);
pinMode(9, OUTPUT);
pinMode(10, OUTPUT);
pinMode(11, INPUT_PULLUP);
pinMode(12, INPUT_PULLUP);
pinMode(13, INPUT_PULLUP);
}
void loop() {
  // put your main code here, to run repeatedly:
 if(digitalRead(13)==0){
  delay(100);
  hitung++;
  if(hitung>9)
  {
    hitung=9;
  }
 }
 //====================
 if(digitalRead(11)==0){
  delay(100);
  hitung--;
  if(hitung<0)
  {
    hitung=0;
  }
 }
 //====================
 if(digitalRead(12)==0){
  delay(100);
  hitung=0;
  
 }
 

 angka(hitung);

}


void latihan1(){
   hitung++;                 //perubahan naik
  if(hitung>9) hitung=0;    //pembatas

  angka(hitung);            //display
  delay(1500);              //jeda 1Second

}