I simply want to test if the 121 number is a palindrome or not. This should write to console “p”.

class Program
{
    static void Main(string[] args)
    {
        int n, new = 0, mem;
        n = 121;
        mem = n;
        while(n)
        {
            new = new*10 + n%10;
            n=n/10;
        }
        if (new == mem)
            Console.WriteLine("p");
    }
}

I tried the code above and didn’t work. I get 17 errors.
One of the errors: Identifier expected at line 5.