#include <stdio.h>

#define SLEN 20

void Copy(char *Dst, const char *Src)
{
  do
  {
   *Dst = *Src;
    Dst++;
  } while(*Src++);
}

int Length(char s[])
{
  int l = 0;
  char *p = s;
  while(*p != 0)
  { 
    p++;
    l++;
  }
  return l;
}

void Reverse(char *str, char *str2)
{
  int k = 0;
  int len = Length(str);
  for(k=0; k<len; k++)
  {
   str2[k] = str[len-k-1];
  }
  str2[k] = '\0';
}

int CheckPalindrome(char *str)
{
  char rev_str[SLEN];
  int len = Length(str);
  int k = 0;
  int is_palin = 1;

  Reverse(str, rev_str);
  for(k =0; k<len; k++)
  {
    if(str[k] != rev_str[k])
    {
      is_palin = 0;
    }
  }
  return is_palin;
}

int main(void)
{
  char s1[SLEN];
  char s2[SLEN];

  printf("Enter string 1 (s1):");
  scanf("%s",s1);
  printf("Enter string 2 (s2):");
  scanf("%s",s2);

  printf("s1 is %s, s2 is %s\n",s1, s2);
  printf("Len(s1)=%d, Len(s2)=%d\n",Length(s1), Length(s2));

  Copy(s2, s1);
  printf("s1 is %s, s2 is %s\n",s1, s2);
  printf("Len(s1)=%d, Len(s2)=%d\n",Length(s1), Length(s2));

  printf("String s1 is palindrome ? - %s\n",((CheckPalindrome(s1)==1)?"Yes":"No"));
}