[C++]Cel mai apropiat vecin al unui nr.

#include<iostream>

using namespace std;

int n, j, s, nrs, nrd, i, x;

void citire();
int suma(int n);

int main()
{
    citire();
    int ok=0;
    x=suma(n);
    i=n+1;
    while(suma(i)!=x)
    {
        i++;
        nrd=i;
    }
    cout<<"Cel mai apropiat numar din dreapta:"<<" "<<nrd<<'\n';
    j=n-1;
    while(suma(j)!=x)
    {
        j--;
        if(j==1)
        {
            ok=1;
            break;
        }
    }
    if(ok==0) nrs=j;
    else cout<<"Nu exista!";
    if(ok==0)
    {
        if(nrd-n < n-nrs)
            cout<<nrd;
        else if(nrd-n==n-nrs)
                cout<<nrd<<" "<<nrs;
            else cout<<"Cel mai apropiat numar din stanga:"<<" "<<nrs<<'\n';
    }
    return 0;
}
void citire()
{
    cout<<"Intoruceti nr.: ";
    cin>>n;
}
int suma(int n)
{   s=0;
    while(n)
    {
        s=s+n%10;
        n/=10;
    }
    return s;
}