#include<conio.h>
#include<iostream.h>
int rear=-1,front=-1,queue[10],max=10;
void main (void)
{
int choice,input;
clrscr();
cout<<"Enter one of the following options\n\n\t--> To Dequeue enter:
1\n\t--> To enqueue enter: 2\n\t--> To display enter: 3\n\t--> To exit
enter: 4\n";
cin>>choice;
while (choice!=4)
{
switch (choice)
{
case 1:
if(front==-1 || rear==-1)
{
cout<<"The queue is empty\n";
}
else
{
for (int i=front;i<rear;i++)
{
queue[i]=queue[i+1];
}
rear--;
}
break;
case 2:
if (rear==(max-1))
{
cout<<"The queue is full\n";
}
else
{
if (front==-1)
{
front=0;
}
cout<<"Enter the number you want to enqueue: ";
cin>>input;
rear++;
queue[rear]=input;
}
break;
case 3:
cout<<"\n";
for(int i=0;i<=rear;i++)
{
cout<<queue[i]<<" ";
}cout<<"\n";
break;
default:
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