Queue using array in c++ code

 Hi, guys Queue using array in c++ code given below

#include<iostream>
using namespace std;
int queue [5];
int front=-1;
int rear=-1;
void enqueue(int x) {
    if(rear==5-1) {
        cout<<"overflow condition";
    }
    else if(rear==-1 and front==-1)
    {
        front=rear=0;
        queue[front]=x;
    }
    else {
        rear++;
        queue[rear]=x;
    }
}
void dequeue() {
    if(front==-1 and rear==-1)
    {
        cout<<"underflow cond";
    }
    else if(rear==front)
    {
        front=rear=-1;
    }
    else {
        cout<<"dequeued element is"<<queue[front]<<endl;
        front ++;
    }
}
void display () {

    if(front==-1 && rear==-1) {
        cout<<"list is empty";
    }
    else
    {
        cout<<"display"<<endl;
    }
    while(front!=rear+1) {
        cout<<queue[front];
        front++;
    }

}
main() {
    enqueue(1) ;
    enqueue(2) ;
    enqueue(3) ;
    enqueue(4) ;
    enqueue(5) ;
    dequeue() ;
    dequeue() ;
    display () ;
}