C program to check a number is palindrome or not using function

#include
int checkPalindrome(int number)
{
?int temp, remainder, sum=0;
?temp = number;
?while( number!=0 )
?{
?remainder = number % 10;
?sum = sum*10 + remainder;
?number /= 10;
?}
?if ( sum == temp ) return 0;
?else return 1;
}
int main()
{
?int number;
?printf("Enter the number: ");
?scanf("%d", &number);
?if(checkPalindrome(number) == 0)
?printf("%d is a palindrome number.\n",number);
?else
?printf("%d is not a palindrome number.\n",number);
?return 0;
}