#include<stdio.h>
#include<math.h>

int reverse(int num)
{
   
    int digit = (int) log10(num);
    

    if(num == 0)
        return 0;
    
    return ((num%10 * pow(10, digit)) + reverse(num/10));
}
int main(){
    int num=34;
printf ("%d",reverse(num));
}