Introduce to Queue and Array Implementation of Queue

#include 
#include 
#include "queue.h"
#define size 3
void main(){ 
    int head,tail,element; 
    int queue[size]; 
    // initialize queue
    init(&head,&tail);  
   // enqueue elements 
   while(full(tail,size) != 1){  
      element = rand();  
      printf("enqueue element
%d\n",element);  
      enqueue(queue,&tail,element);  
      printf("head=%d,tail=%d\n",head,tail); 
      //press enter to enqueue more  
      getchar(); 
   } 
      printf("queue is full\n"); 
      // dequeue elements from 
      while(!empty(head,tail)){    
         element = dequeue(queue,&head);
         printf("dequeue element %d \n",element)
        //press enter to pop more
         getchar(); 
       } 
      printf("queue is empty\n"); 
     getchar();
}