Menthetetlne volt a kódod

#include <iostream>

using namespace std;

int main()
{
    int a,b,h=0,r,c, i;
    cout << "smaller ";
    cin >> a;
    cout << "bigger ";
    cin >> b;

    for (int n = a; n <= b; n++)
    {
        r = n;
        h = 0;

        while(r>0)
        {
            c = r % 10;
            r = r / 10;
            h = h*10+c;
        }
        if (n==h)
        {
            int prim = 0;
            for(i = 2; i <= n / 2; i++)
            {
                if(n % i == 0)
                {
                    prim = 1;
                    break;
                }
            }
            if (prim == 0)
            { cout << "#" << n << endl;}
        }
    }

    return 0;
}