fds12.txt

#include<iostream>
#define size 5
using namespace std;
class pizzaparlor
{
 int order[size];
 int front,rear;
 public:
 pizzaparlor()
 {
 front=rear=-1;
 }
 int qfull()
 {
 if((front==0)&&(rear==size-1)||(front=rear+1)%size)
 {
 return 1;
 }
 else
 {
 return 0;
 }
 }
 int qempty()
 {
 if(front==-1)
 {
 return 1;
 }
 else
 {
 return 0;
 }
 }
 void takeorder(int);
 void serveorder();
 void display();
};
void pizzaparlor::takeorder(int item)
{
 if(qfull())
 {
 cout<<"Sorry!!! NO MORE ORDER ACCEPTED";
 }
 else
 {
 if(front==-1)
 {
 front=rear=0;
 }
 else
 {
 rear=(rear+1)%size;
 }
 order[rear]=item;
 } 
}
void pizzaparlor::serveorder()
{
 if(front==-1)
 {
 cout<<"NO ORDER IN PARLOR";
 }
 else
 {
 cout<<"Order No."<<order[front]<<" is ready";
 if(front==rear)
 {
 front=rear=-1;
 }
 else
 {
 front=(front+1)%size;
 }
 } 
}
void pizzaparlor::display()
{
 int i;
 if(front==-1)
 {
 cout<<"DONE WITH ALL ORDERS";
 return;
 }
 else
 {
 cout<<"ORDER ID IS : \n";
 if(i=front,i!=rear,i=i+1)
 {
 cout<<order[i]<<endl;
 }
 cout<<order[rear];
 }
}
int main()
{
 int ch,m;
 pizzaparlor p;
 do
 {
 cout<<"\n !!! PIZZA HUT !!! \n";
 cout<<"\n******** SELECT YOUR OPTION MENU ********\n";
 cout<<"\n1. Accept Order\n2. Serve Order\n3. Display Order\n4. Exit\n";
 cin>>ch;
 switch(ch)
 {
 case 1:
 cout<<"Which pizza would you like to select : \n";
 cout<<"\n1. Panner Pizza\n2. Veg Pizza\n3. Cheesy Pizza\n";
 cout<<"Please select : ";
 cin>>m;
 p.takeorder(m);
 break;
 case 2: p.serveorder();
 break;
 case 3: p.display();
 break; 
 }
 } 
 while (ch!=4);
 cout<<"\nThank you for visiting.....";
 return 0; 
}