Create GroupE_Practical32(C++).cpp

Author: Parth1906

GroupE_Practical32(C++).cpp

@@ -0,0 +1,151 @@
+/*
+Pizza parlor accepting maximum M orders. 
+Orders are served in first come first served basis. Order once placed can not be cancelled. 
+Write C++ program to simulate the system using circular queue using array.
+*/
+
+#include<iostream>
+#include<cstdlib>
+using namespace std;
+class pizza
+{
+ int front,rear,q[5];
+ public:
+ pizza()
+ {
+ front=-1;
+ rear=-1;
+ }
+ int isfull()
+ {
+
+if((front==0&&rear==4)||front==rear+1)
+ {
+ return 1;
+ }
+else
+{
+ return 0;
+ }
+ }
+ int isempty()
+ {
+ if(front==-1&&rear==-1)
+ {
+ return 1;
+ }
+ else
+{
+ return 0;
+ }
+ }
+ void add()
+ {
+ if(isfull()==0)
+ {
+ cout<<"\n Enter the Pizza ID: ";
+ if(front==-1&&rear==-1)
+ {
+ front=0;
+ rear=0;
+ cin>>q[rear];
+ }
+ else
+ {
+ rear=(rear+1)%5;
+ cin>>q[rear];
+ }
+ char c;
+ cout<<" Do you want to add another order ? ";
+ cin>>c;
+ if(c=='y'||c=='Y')
+ add();
+ }
+ else
+ {
+ cout<<"\n Orders are full ";
+ }
+
+ }
+ void serve()
+ {
+ if(isempty()==0)
+ {
+ if(front==rear)
+ {
+ cout<<"\n Order served is : "<<q[front];
+ front=-1;
+ rear=-1;
+ }
+ else
+ {
+ cout<<"\n Order served is : "<<q[front];
+ front=(front+1)%5;
+ }
+ }
+ else
+ {
+ cout<<"\n Orders are empty ";
+ }
+ }
+ void display()
+ {
+ if(isempty()==0)
+ {
+ for(int
+i=front;i!=rear;i=(i+1)%5)
+ {
+ cout<<q[i]<<"
+<- ";
+ }
+ cout<<q[rear];
+ }
+ else
+ {
+ cout<<"\n Orders are empty";
+ }
+ }
+ void check()
+ {
+ int ch;
+cout<<"\n\n * * * * PIZZA PARLOUR * * * * \n\n";
+ cout<<"\n 1. Add a Pizza \n 2. Display the Orders \n 3. Serve a pizza \n 4. Exit \n Enter your choice : ";
+ cin>>ch;
+switch(ch)
+{
+ case 1:
+ add();
+break;
+
+ case 2:
+
+display();
+ break;
+
+ case 3:
+
+serve();
+ break;
+
+ case 4:
+
+exit(0);
+
+ default:
+ cout<<"Invalid choice ";
+
+check();
+ }
+char ch1;
+cout<<"\n Do you want to continue? ";
+ cin>>ch1;
+ if(ch1=='y'||ch1=='Y')
+check();
+ }
+};
+int main()
+{
+ pizza p1;
+ p1.check();
+ return 0;
+}