Suma de meitats d'un número relacionades - X84338

#include <iostream>
using namespace std;

int main(){
    int num,conta=0,separat1=0,separat2=0;
    cin>>num;
    int aux=num;
    if(num!=0){
        while(aux!=0){
        aux/=10;
        ++conta;
        }
    }
    else cout<<"res"<<endl;
    if(conta%2==0 && num!=0){
        int aux2,reduir=num;
        for(int i=0;i<(conta/2);++i){
            aux2=reduir;
            aux2%=10;
            reduir/=10;
            separat2=separat2+aux2;
        }
        for(int i=0;i<(conta/2);++i){
            aux2=reduir;
            aux2%=10;
            reduir/=10;
            separat1+=aux2;
        }
        if(separat1>separat2) cout<<separat1<<" > "<<separat2<<endl;
        else if(separat1<separat2) cout<<separat1<<" < "<<separat2<<endl;
        else cout<<separat1<<" = "<<separat2<<endl;
    }
    else if (conta%2==1) cout<<"res"<<endl;
}