Insertion_Deletion_in_array

#include<iostream>

using namespace std;

int main()
{
	
	int queue[10], front, rear, ch, i;
	char ans;
	front=rear=-1;
	do
	{
		cout<<"Press 1 to insert"<<endl;
		cout<<"Press 2 to delete"<<endl;
		cout<<"Press 3 to display"<<endl;
		cout<<"ENTER YOUR CHOICE"<<endl;
		cin>>ch;
		switch(ch)
			{
				case 1:
				if(front==-1)
			{
				front=0;
			}
				rear=rear+1;
				if(rear>9)
				{
					cout<<"can not insert"<<endl;
					rear=rear-1;
				}
				else
					{
						cout<<"enter the element"<<endl;
						cin>>queue[rear];
					}
						break;
				case 2:
				if(front==-1)
				{
					cout<<"can not delete"<<endl;
				}
					else
				{
				cout<<"deleted information is"<<queue[front]<<endl;
				front=front+1;
				if(front>rear)
				{	
					front=rear=-1;
				}
				}
				break;
				case 3:
				if(front==-1)
				{
				cout<<"can not display"<<endl;
				}
				else
				{
				for(i=front;i<=rear;i++)
					{
					cout<<queue[i]<<" "<<endl;
					}
				}
				break;
				default:
				cout<<"invalid choice"<<endl;
				}
				cout<<"wanna continue?(y/n)"<<endl;
				cin>>ans;
				}
	while(ans=='y');
	
}