NUmere mari, gasiti greseala cu 0

#include <iostream>
#include <fstream>
using namespace std;

const int dim = 2019;

void citeste( int *A, int *B )
{
    int i, n, k;
    ifstream f( "date.in" );
    string nr1, nr2;
    f >> nr1 >> nr2;
    n = nr1.size();
    A[ 0 ] = n;
    k = 1;
    for( i = n - 1; i >= 0; --i )
        {
            A[ k ] = nr1[ i ] - '0';
            ++k;
        }

    n = nr2.size();
    B[ 0 ] = n;
    k = 1;
    for( i = n - 1; i >= 0; --i )
        {
            B[ k ] = nr2[ i ] - '0';
            ++k;
        }
    f.close();
}


void afiseaza( int *X )
{
    for( int i = X[ 0 ]; i > 0; --i )
        cout << X[ i ];
    cout << endl;
}


int* aduna(  int *A, int *B )
{
    int i, s, mn, mx;
    int *C = new int[ dim ];
    mn = min( A[ 0 ], B[ 0 ] );
    mx = max( A[ 0 ], B[ 0 ] );

    s = 0;
    for( i = 1; i <= mn; ++i )
        {
            cout << "s = " << s << endl;
            cout << A[ i ] << " + " << B[ i ] << endl;
            s = s + A[ i ] + B[ i ];
            if( s > 9 )
                C[ i ] = s - 10, s = s / 10;
            else
                C[ i ] = s, s = 0;
            cout << "s = " << s << endl;
            cin.get();
        }

    for( i = mn + 1; i <= mx; ++i )
        {
            cout << "s = " << s << endl;
            cout << A[ i ] << " + " << B[ i ] << endl;
            s = s + A[ i ] + B[ i ];
            if( s > 9 )
                C[ i ] = s - 10, s = s / 10;
            else
                C[ i ] = s, s = 0;
            cout << "s = " << s << endl;
            cin.get();
        }
    cout << "i = " << i << endl;
    cout << "s = " << s << endl;

    C[ 0 ] = mx;
    if( s > 0 )
        C[ mx + 1 ] = s, C[ 0 ] = mx + 1;
     return C;
}


int* inmulteste( int *A, int *B )
{
    int *C = new int[ dim ], i, j, k, transp = 0;
    C[ 0 ] = A[ 0 ] + B[ 0 ] - 1;
    for( i = 1; i <= C[ 0 ]; ++i )
        C[ i ] = 0;

    cout << "Dimensiunea initiala a vct produs: " << C[ 0 ] << endl;
    cin.get();

    /// Fac inmultirea obisnuita si apoi mai reparcurg inca o data, pentru a duce transportul
    /// si a avea cate o cifra
    k = 1;
    for( i = 1; i <= A[ 0 ]; ++i )
        for( j = 1; j <= B[ 0 ]; ++j )
            C[ k ] = A[ i ] * B[ j ], cout << C[ k ] << " ", ++k ;

    cout << "Am terminat prima faza a inm" << endl;
    cin.get();

    for( i = 1; i <= C[ 0 ]; ++i )
        ///if( C[ i ] > 9 )
            {
                cout << "Inainte, C[ " << i << "] = " << C[ i ] << endl;
                transp = transp + C[ i ];
                C[ i ] = transp % 10;
                transp = transp / 10;
                cout << "Dupa, C[ " << i << "] = " << C[ i ] << endl;
                cout << "Dupa, transp = " << transp << endl << endl;
            }
        //else
          //  C[ i ] = transp, transp = 0;

    if( transp > 0 )
        ++C[ 0 ], C[ i ] = transp; /// i, dupa ultimul for are exact valoarea indicelui pozitiei noi.

    return C;
}


int main()
{
    int *A, *B, *C, *D;
    A = new int[ dim ];
    B = new int[ dim ];
    citeste( A, B );
    afiseaza( A );
    afiseaza( B );

    C = aduna( A, B );
    afiseaza( C );

    D = inmulteste( A, B );
    afiseaza( D );


    return 0;
}