/*  Stack of integers  */  
                  
public class Stack{
  
    /* declare member variables to represent a linked list 
        of integers   */

   //creates an empty stack
     Stack(){
      /* write the body of the constructor */
    }
    
   //returns the top element of stack
   //this is the most recently pushed element 
    int top(){
      /* write body of this method */
    } 

    //adds x to top of the stack.
    void push(int x){
      /* write body of this method */ 
    }

    //deletes top element from the stack
    void pop(){
        /* write body of this method */      
    }

    /* write main method to test the Stack class */ 
    
}