Dynamic stack

/* Program for palindrome using a dynamic stack */

#include<stdio.h>
#include<stdlib.h>
#include "stack2.h" //implementation of dynamic stack

int main()
{
stack *TOP;
char x[30];
int i;
init(&TOP);
printf("\nEnter a string : ");
for(i=0;(x[i]=getchar())!='\n';i++)
push(&TOP,x[i]);
x[i]='\0';
i=0;
while(!empty(TOP))
 {
   if(x[i]!=pop(&TOP))
     break;
   else
      i++;
 }
       if(empty(TOP))
  printf("\nA palindrome ");
       else
  printf("\nNot a palindrome");

}