Impartirea unui nr mare la un scalar

#include <iostream>
#include <cstring>
// impartirea unui numar mare la un scalar
using namespace std;

int n,nrcif,i;
char v[105];

int impart(int n)
{
    int r=0;
    for(i=nrcif; i>=1; i--)
    {
        r=10*r+(v[i]-'0');
        v[i]=(r/n)+'0';
        r%=n;
    }
    while(v[nrcif]=='0' && nrcif>1)
        nrcif--;
    return r;
}

int main()
{
    cin>>v+1;
    nrcif=strlen(v+1);
    for(i=1; i<=nrcif/2; i++)
        swap(v[i],v[nrcif-i+1]);
    cin>>n;
    cout<<impart(n)<<'\n';
    for(i=nrcif; i>=1; i--)
        cout<<v[i];
    return 0;
}