float sum = 0;
int ipol, imin;
    imin = 0;
ipol = -1;
for (i = 0;i < n;i++)
    if (A[i] > 0)
    {
        ipol = i;break;
    }
for (i = 0;i < n;i++)
    if (A[imin] > A[i]) imin = i;
if (ipol > -1)
{
    int istart = (ipol < imin) ? ipol : imin;
    int iend = (ipol < imin) ? imin : ipol;
    for (i = istart + 1;i < iend;i++)
        if (A[i] > 0) sum += A[i];
    cout << "Сумма равна  " << sum << endl;

}
else cout << "Нет положительных элементов " << endl;