C++ palindrome number help!

Question

The test case 3 and 4 (which are hidden) are not working with this code. Can anyone please tell me what's wrong with the code? Thankyou.

#include <iostream>
#include <cmath>
using namespace std;

bool isPalindrome(int x) {
//complete the function
int len = sizeof(x);
int revSum = 0;
int tempX = x;
for (int i = 0; i < len; i++)
{
revSum += (tempX % 10) * pow(10, len - i - 1);
tempX /= 10;
}
if (revSum == x)
{
return true;
}
else
{
return false;
}
}

int main() {
int n;
cin >>n;

if(isPalindrome(n)) {
cout <<n<<" is a palindrome";
}
else {
cout << n<<" is NOT a palindrome";
}
return 0;
}

Answer 1

Aarya Parekh ,

the calculation for variable <resSum> is not correct. for input: 11 it shows a final value of 1100.
so i recommend you to rework this.

happy coding and good success!

Answer 2

you doesn't need len = sizeof(x), wich get the byte size of the variable (int) and you should use a 'while (tempX)' loop rather than a 'for' loop...

also, you formula to compute revSum is wrong ^^

here's a corrected version of your code (keeping old changed code but commented):

https://code.sololearn.com/c6IkQQtPhaGD/?ref=app