q2.c

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "cststack.h"
void main()
{
    int i;
    char s[MAX], b;
            printf("Enter the String\n");
            scanf("%s", s);
            for (i = 0;s[i] != '\0';i++)
            {
                b = s[i];
                push(b);
            }
            for (i = 0;i < (strlen(s) / 2);i++)
            {
                if (stack[top] == stack[front])
                {
                    pop();
                    front++;
                }
                else
                {
                    printf("%s is not a palindrome\n", s);
                    break;
                }
            }
            if ((strlen(s) / 2)  ==  front)
                printf("%s is palindrome\n",  s);
            front  =  0;
            top  =  -1;
}