text: #include<stdio.h>
  #include<stdlib.h>
  #include<string.h>
  #include<math.h>
  #include<stdbool.h>
  
  struct node{
      int data;
      struct node* link;
  };
  
  struct head{
      struct node* link;
      int top;
  };
  
  void pushe(struct head* head , int d);
  void pope(struct head* head);
  void displaystack(struct head* head);
  