int A=1;
int B=2;
int C=3;
int D=4;
int E=5;
int F=6;
int G=7;
int DP=8;
int buttonPin   =13;
int buttonStatus=0;
int counter     =0;
void setup() {
  // put your setup code here, to run once:
pinMode(A, OUTPUT);
pinMode(B, OUTPUT);
pinMode (C, OUTPUT);
pinMode (D, OUTPUT);
pinMode (E, OUTPUT);
pinMode(F, OUTPUT);
pinMode (G, OUTPUT);
pinMode (DP, OUTPUT);
pinMode(13, INPUT_PULLUP);
digitalWrite(A, HIGH);
digitalWrite(B, HIGH);
digitalWrite(C, HIGH);
digitalWrite(D, HIGH);
digitalWrite(E, HIGH);
digitalWrite(F, HIGH);
digitalWrite(G, HIGH);
digitalWrite(DP,HIGH);
}

void loop() {
  // put your main code here, to run repeatedly:
buttonStatus= digitalRead(buttonPin);
 //Membaca push button status yang di tekan
  if (buttonStatus = HIGH)
   { 
     if(counter == 9)
     { 
       counter = -1; 
     }  
   counter++; 
   Serial.println(counter);
   gantiAngka (counter);
   delay (300); 
   }
   else 
   { 
   Serial.println("OFF");
   } 
    delay (50);
}
void gantiAngka(int buttonTekan)
{
  switch (buttonTekan)
  {
    //nomer 0
    case 0:
    digitalWrite(A, LOW);
     digitalWrite(B, LOW);
      digitalWrite(C, LOW);
       digitalWrite(D, LOW);
        digitalWrite(E, LOW);
         digitalWrite(F, LOW);
          digitalWrite(G, HIGH);
           break;
    //nomer 1
    case 1:
     digitalWrite(A, HIGH);
      digitalWrite(B, LOW);
       digitalWrite(C, LOW);
        digitalWrite(D, HIGH);
         digitalWrite(E, HIGH);
          digitalWrite(F, HIGH);
           digitalWrite(G, HIGH);
            break;
    //nomer2
    case 2:
    digitalWrite(A, LOW);
     digitalWrite(B, LOW);
      digitalWrite(C, HIGH);
       digitalWrite(D, LOW);
        digitalWrite(E, LOW);
         digitalWrite(F, HIGH);
          digitalWrite(G, LOW);
           break;
    //nomer3
    case 3:
    digitalWrite(A, LOW);
     digitalWrite(B, LOW);
      digitalWrite(C, LOW);
       digitalWrite(D, LOW);
        digitalWrite(E, HIGH);
         digitalWrite(F, HIGH);
          digitalWrite(G, LOW);
            break;     
    //nomer4
    case 4:
    digitalWrite(A, HIGH);
     digitalWrite(B, LOW);
      digitalWrite(C, LOW);
       digitalWrite(D, HIGH);
        digitalWrite(E, HIGH);
         digitalWrite(F, LOW);
          digitalWrite(G, LOW);
           break;
    //nomer5
    case 5:
    digitalWrite(A, LOW);
     digitalWrite(B, HIGH);
      digitalWrite(C, LOW);
       digitalWrite(D, LOW);
        digitalWrite(E, HIGH);
         digitalWrite(F, LOW);
          digitalWrite(G, LOW);
           break;
    //nomer6
    case 6:
    digitalWrite(A, LOW);
     digitalWrite(B, HIGH);
      digitalWrite(C, LOW);
       digitalWrite(D, LOW);
        digitalWrite(E, LOW);
         digitalWrite(F, LOW);
          digitalWrite(G, LOW);
           break;
    //nomer7
    case 7:
    digitalWrite(A, LOW);
     digitalWrite(B, LOW);
      digitalWrite(C, LOW);
       digitalWrite(D, HIGH);
        digitalWrite(E, HIGH);
         digitalWrite(F, HIGH);
          digitalWrite(G, HIGH);
           break;
    //nomer8
    case 8:
    digitalWrite(A, LOW);
     digitalWrite(B, LOW);
      digitalWrite(C, LOW);
       digitalWrite(D, LOW);
        digitalWrite(E, LOW);
         digitalWrite(F, LOW);
          digitalWrite(G, LOW);
           break;
    //nomer9
    case 9:
    digitalWrite(A, LOW);
     digitalWrite(B, LOW);
      digitalWrite(C, LOW);
       digitalWrite(D, LOW);
        digitalWrite(E, HIGH);
         digitalWrite(F, LOW);
          digitalWrite(G, LOW);
           break;                                               
  }

}