How do i combine two Arduino sketches?

Using Arduino Programming Questions
3

Sure.
Combine the pre-setup stuff,
Combine the void setup stuff,
Combine the void loop stuff.
Resolve any duplication.

int butonpin = 8;

int gelen = HIGH;
int okunan;
int onceki = LOW;

long zaman = 0;
long ziplama = 200;

void setup(){

  pinMode(butonpin, INPUT);
  pinMode(0,OUTPUT);
  pinMode(1,OUTPUT);
  pinMode(2,OUTPUT);
  pinMode(3,OUTPUT);
  pinMode(4,OUTPUT);
  pinMode(5,OUTPUT);
  pinMode(6,OUTPUT);
}
void loop(){
  int i;
  for( i = 0; i < 10; i++)
  {
    rakamgoster(i);
    delay(500);
  }
  okunan = digitalRead(butonpin);
  if(okunan == HIGH && onceki == LOW && millis() - zaman > ziplama)
  {
    if (gelen == HIGH)
      gelen = LOW;
    else
      gelen = HIGH;

    zaman = millis();
  }

  digitalWrite(0, gelen);
  onceki = okunan;
}
void rakamgoster(int rakam)
{
  switch(rakam)
  {
  case 0:
    digitalWrite(0,LOW);
    digitalWrite(1,LOW);
    digitalWrite(2,LOW);
    digitalWrite(3,LOW);
    digitalWrite(4,LOW);
    digitalWrite(5,LOW);
    digitalWrite(6,HIGH);
    break;
  case 1:
    digitalWrite(0,HIGH);
    digitalWrite(1,LOW);
    digitalWrite(2,LOW);
    digitalWrite(3,HIGH);
    digitalWrite(4,HIGH);
    digitalWrite(5,HIGH);
    digitalWrite(6,HIGH);
    break;
  case 2:
    digitalWrite(0,LOW);
    digitalWrite(1,LOW);
    digitalWrite(2,HIGH);
    digitalWrite(3,LOW);
    digitalWrite(4,LOW);
    digitalWrite(5,HIGH);
    digitalWrite(6,LOW);
    break;
  case 3:
    digitalWrite(0,LOW);
    digitalWrite(1,LOW);
    digitalWrite(2,LOW);
    digitalWrite(3,LOW);
    digitalWrite(4,HIGH);
    digitalWrite(5,HIGH);
    digitalWrite(6,LOW);
    break;
  case 4:
    digitalWrite(0,HIGH);
    digitalWrite(1,LOW);
    digitalWrite(2,LOW);
    digitalWrite(3,HIGH);
    digitalWrite(4,HIGH);
    digitalWrite(5,LOW);
    digitalWrite(6,LOW);
    break;
  case 5:
    digitalWrite(0,LOW);
    digitalWrite(1,HIGH);
    digitalWrite(2,LOW);
    digitalWrite(3,LOW);
    digitalWrite(4,HIGH);
    digitalWrite(5,LOW);
    digitalWrite(6,LOW);
    break;
  case 6:
    digitalWrite(0,LOW);
    digitalWrite(1,HIGH);
    digitalWrite(2,LOW);
    digitalWrite(3,LOW);
    digitalWrite(4,LOW);
    digitalWrite(5,LOW);
    digitalWrite(6,LOW);
    break;
  case 7:
    digitalWrite(0,LOW);
    digitalWrite(1,LOW);
    digitalWrite(2,LOW);
    digitalWrite(3,HIGH);
    digitalWrite(4,HIGH);
    digitalWrite(5,HIGH);
    digitalWrite(6,HIGH);
    break;
  case 8:
    digitalWrite(0,LOW);
    digitalWrite(1,LOW);
    digitalWrite(2,LOW);
    digitalWrite(3,LOW);
    digitalWrite(4,LOW);
    digitalWrite(5,LOW);
    digitalWrite(6,LOW);
    break;
  case 9:
    digitalWrite(0,LOW);
    digitalWrite(1,LOW);
    digitalWrite(2,LOW);
    digitalWrite(3,HIGH);
    digitalWrite(4,HIGH);
    digitalWrite(5,LOW);
    digitalWrite(6,LOW);
    break;
  }

}