Answer Posted / abdur rab

#include <stdio.h>

int reverse_digits ( int number, int* digits )
{
int n_digits = 0;
int rev_number = 0;

while ( number ) {
rev_number *= 10;
rev_number += number % 10;
number /= 10;
n_digits++;
}

*( digits ) = n_digits;
return ( rev_number );
}

int palindrome ( int number, int digits )
{
int flag = 1;

while ( number ) {
if ( ( number % 10 ) != ( number / (int)
pow ( 10, digits - 1 ) ) && ( digits > 1 ) ) {
flag = 0;
break;
}

// removing first and last digits
if ( 1 < ( digits -= 2 ) ) {
number /= 10;
number = number % (int) pow ( 10,
digits );
} else break;
}

return ( flag );
}

int main ( int argc, char* argv [] )
{
int number = 123;
int digits = 0;

int rev_number = 0;

rev_number = reverse_digits ( number, &digits );

if ( !palindrome ( number, digits ) ) {
printf ("\n NOT Palindrome, creating
Palindrome");
/**
* if you need 12321 use digits - 1
* if you need 123321 use digits
*/
number *= (int) pow ( 10, ( digits - 1 ) );
number += rev_number % (int) pow ( 10, (
digits - 1 ) );
}

printf ( "\n The Number: %d", number );

return ( 0 );
}

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