Merge_run

void Merge_run(ifstream &a, ifstream &b, ofstream &f)
{
    int sl1=0, sl2=0;
    int i = 0;
    int keyA=0, keyB=0;
    int j = 0, g = 1;
    do
    {
        if (keyA < sl2||i==0)
        a >> sl1;
        else sl1 = keyA;
        i++;
        if (j == 1 || g == 1) {
            b >> sl2;
        }
        if (sl1 < sl2)
        {
            //Copy(a, f);
            f << sl1 << " ";
            a >> keyA;
            if (a.eof())
                eor = true;
            else
            {
                eor = sl1>keyA;
                if (!eor)
                    if (keyA < sl2)
                    f << keyA << " ";

            }

            if (eor)
            {
                do
                {
                    f << sl2 << " ";
                    j = 1;
                    b >> keyB;
                    if (b.eof())
                        eor = true;
                    else
                    {
                        eor = sl2 > keyB;
                        if (!eor)
                            f << keyB << " ";

                    }

                } while (!eor);
            }
        }
        else
        {
                //Copy_run(a, f);
            f << sl2 << " ";
            b >> keyB;
            if (b.eof())
                eor = true;
            else
            {
                eor = sl2 > keyB;
                if (!eor)
                    f << keyB << " ";
            }

            if (eor)
            {
                do
                {
                    f << sl1 << " ";
                    a >> keyA;
                    if (a.eof())
                        eor = true;
                    else
                    {
                        eor = sl1 > keyA;
                        if (!eor)
                            f << keyA << " ";

                    }

                } while (!eor);
            }
        }



    } while (!eor);

}