palindrome-noarray.c

#include <stdio.h>

int main() {
	int input, tmp;
	int reversedInput = 0;

	printf("A number: ");
	scanf("%d", &input);

	tmp = input;
	while (tmp != 0) {
		reversedInput = (reversedInput * 10) + (tmp % 10);
		tmp /= 10;
	}

	if (input == reversedInput)
		printf("Yes\n");
	else
		printf("No\n");

	return 0;
}