int palindrome_check(char *s, int len, int x)
{
if(x >= len) {
return 1;
}
if(s[x] != s[len - x - 1]) {
return 0;
}
return palindrome_check(s, len, x + 1);
}
int gen(int a, int b) {
int largest_palindrome = 0;
while (a > 0) {
int multiplier = b;
while (multiplier > 0) {
int product = a * multiplier;
if (palindrome_check(product)) {
if (product > largest_palindrome) {
largest_palindrome = product;
}
}
multiplier -= 1;
}
a -= 1;
}
return largest_palindrome;
}
/****************************************************************************
*
* Function Name : main
* Description : Demonstration basic string concepts
* Returns : Success or Failure
*
****************************************************************************/
int main()
{
char input[NAMESZ]; /* Variable to get input from user */
char reverse[NAMESZ]; /* Variable to store reverse of string */
char *fgets_ret = NULL; /* Return Value from fgets */
/* Initializing the local variables */
memset(input, 0, NAMESZ);
memset(reverse, 0, NAMESZ);
printf("Enter a string (Size < 32)\n");
/* Observe the waring given by compiler for the following line.
Compiler gives the warning since there is no array bound check for gets */
/* Same issue is there with scanf also */
// gets(input);
/* fgets has an option to specify the array bound */
fgets_ret = fgets(input, NAMESZ,stdin);
if(NULL != fgets_ret)
{
/* fgets reads a maximum of NAMESZ-1 characters. Last position is reserved for
'\0'. But there could be a '\n' before '\0' if the number of characters
were less than NAMESZ-1. So we need to remove it */
remove_newline(input);
/* reversing the string */
str_rev(input, reverse);
printf("Original string is %s\n", input);
printf("Original string is %s\n", reverse);
/* Checking for palindrome */
palindrome_check(input,reverse);
}
else
{
printf("fgets failed\n");
}
return 0;
}
int is_palindrome(char *s)
{
int str_len;
str_len = length(s, 0);
return palindrome_check(s, str_len ,0);
}
