3. program - red_polje.h

//red_polje.h
 
struct klijent_banke
{
  char prezime_ime[30];
  int godina_rodjenja;
  int stanje_bankovnog_racuna;
  int vrsta_transakcije;
};
#define VELICINA 100
struct ATP_Red
{
  klijent_banke polje[VELICINA];
  int front;
  int rear;
};
 
void EnQueueQ (klijent_banke x, ATP_Red *red)
{
  red->polje[(red->rear+1) % VELICINA] = x;
  red->rear = (red->rear + 1) % VELICINA;
}
 
void DeQueueQ (ATP_Red *red)
{
  (*red).front = ((*red).front + 1) % VELICINA;
}
 
bool IsEmptyQ (ATP_Red *red)
{
  if ((red->rear + 1) % VELICINA == red->front)
  {
    return true;
  }
  else
  {
    return false;
  }
}
 
void InitQ (ATP_Red *red)
{
  red->rear = VELICINA - 1;
  red->front = 0;
}
 
klijent_banke FrontQ (ATP_Red *red)
{
  if (IsEmptyQ(red) == false)
  {
    return red->polje[red->front];
  }
  else
  {
    cout << endl << endl << "Red je prazan!" << endl << endl;
  }
}