#include<stdio.h>
#define MAX 4
int queue_array[MAX];
int front=-1;
int rear=-1;
main(){

int choice;
while(1)
{

    printf("1. Insert elememt to queue \n");
    printf("2. Delete element from queue\n");
    printf("3. Display the element of queue \n");
    printf("4. Exit \n");
    printf("Enter your choice: \n");
    scanf("%d",&choice);
    switch(choice){
case 1:
    insert();
case 2:
    delete();
case 3:
    display();
case 4:
    exit(1);
default:
    printf("Wrong choice \n");
    }
insert()
{
    int item;
    if (rear==Max-1)
        printf("Queue Overflow \n");
    else{
        if (front==-1)
            front=0;
        printf("Insert the elemen in queue: \n");
        scanf("%d",&item);
        rear=rear+1;
        queue_array[rear]=item;
    }
    
}
}
}