Program Queue (Antrian)

Mei 31, 2018

Program Queue

Program Antrian atau yang bisa kita sebut "Queue"
Penyimpanan data dimana operasi penambahan dilakukan dilakukan diposisi terakhir / ekor (Tail) dan penghapusannya hanya dapat dilakukan pada posisi terdepan / kepala (Head).
Prinsip dari Queue itu sendiri adalah :
􀂃 First In First Out (FIFO)

Ini adalah contoh program queue

#include <stdio.h>
#include <iostream>
#include <conio.h>
#define MAX 8
using namespace std;
typedef struct{
int data[MAX];
int head;
int tail;
}Queue;
Queue antrian;
void Create(){
antrian.head=antrian.tail=-1;
}
int IsEmpty(){
if(antrian.tail==-1)
return 1;
else
return 0;
}
int IsFull(){
if(antrian.tail==MAX-1)
return 1;
else
return 0;
}
Enqueue(int data)
{
if(IsEmpty()==1)
{
antrian.head=antrian.tail=0;
antrian.data[antrian.tail]=data;
printf("%d sudah dimasukan",antrian.data[antrian.tail]);
} else
if(IsFull()==0)
{
antrian.tail++;
antrian.data[antrian.tail]=data;
printf("%d sudah dimasukan",antrian.data[antrian.tail]);
}
}
int Dequeue()
{
int i;
int e = antrian.data[antrian.head];
for(i=antrian.head; i<=antrian.tail-1;i++)
{
antrian.data[i]=antrian.data[i+1];
}
antrian.tail--;
return e;
}
void Clear()
{
antrian.head=antrian.tail=-1;
printf("CLEAR");
}
void Tampil()
{
if(IsEmpty()==0)
{
for(int i=antrian.head;i<=antrian.tail;i++)
{
printf(" %d",antrian.data[i]);
}
}else printf("data kosong!\n");
}
main()
{
int pil;
int data;
Create();
do{
cout<<endl<<endl;
cout<<" =============================="<<endl;
cout<<" =\t PROGRAM QUEUE ="<<endl;
cout<<" =============================="<<endl;
cout<<" = 1. ENQUEUE = "<<endl;
cout<<" = 2. DEQUEUE = "<<endl;
cout<<" = 3. TAMPIL = "<<endl;
cout<<" = 4. CLEAR = "<<endl;
cout<<" = 5. EXIT ="<<endl;
cout<<" =============================="<<endl;
cout<<" Masukan Pilihan : ";cin>>pil;
switch(pil)
{
case 1:
cout<<"Masukan Data : ";cin>>data;
Enqueue(data);
break;
case 2:
Dequeue();
break;
case 3:
Tampil();
break;
case 4:
Clear();
break;
case 5:
break;
}
getch();
}
while(pil!=5);
return 0;
}

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