{}
#include <stdio.h>
#define MAX 5
int queue[MAX];
int front = -1;
int rear = -1;
void enqueue(int x){
if(rear == MAX-1){
printf("Queue Overflow \n");
}
else{
if(front == -1)
front = 0;
rear++;
queue[rear]=x;
printf("%d enqueued\n",x);
}
}
void dequeue(){
if (front == -1 || front>rear){
printf("Queue Underflow\n");
}
else{
printf("%d dequeued \n",queue[front]);
front++;
}
}
void display(){
if (front == -1){
printf("Queue is empty \n");
} else{
printf("Queue elements: ");
for(int i = front; i <= rear; i++){
printf( " %d " ,queue[i]);
}
printf(" \n ");
}
}
int main(){
enqueue(10);
enqueue(20);
enqueue(30);
display();
dequeue();
display();
return 0;
}