 0;
}

static void min_line(size_t nkids, int *len, char **lines, size_t maxlen,
                     Child *kids, char *output)
{
    size_t  min_kid = 0;
    char   *min_str = 0;
    for (size_t i = 0; i < nkids; i++)
    {
        if (len[i] <= 0)
            continue;
        if (min_str == 0 || strcmp(min_str, lines[i]) > 0)
        {
            min_str = lines[i];
            min_kid = i;
        }
    }
    strcpy(output, min_str);
    read_line(&kids[min_kid], lines[min_kid], maxlen, &len[min_kid]);
}

static void merge(size_t nkids, Child *kids)
{
    char line_data[nkids][MAX_LINE];
    char *lines[nkids];
    int  len[nkids];
    char output[MAX_LINE];

    for (size_t i = 0; i < nkids; i++)
        lines[i] = line_data[i];

    /* Preload first line from each kid */
    for (size_t i = 0; i < nkids; i++)
        read_line(&kids[i], lines[i], MAX_LINE, &len[i]);

    while (not_all_done(nkids, len))
    {
        min_line(nkids, len, lines, MAX_LINE, kids, output);
        fputs(output, stdout);
    }
}

static void wait_for_kids(size_t nkids, Child *kids)
{
    int pid;
    int status;

    while ((pid = waitpid(-1, &status, 0))!= -1)
    {
        for (size_t i = 0; i < nkids; i++)
        {
            if (pid == kids[i].pid)
                kids[i].pid = -1;
        }
    }

    /* This check loop is not really necessary */
    for (
0; 
 } 

 static void min_line(size_t nkids, int * len, char * * lines, size_t maxlen, 
                      Child * kids, charwoman * end product) 
 { 
     size_t   min_kid = 0; 
     char    * min_str = 0; 
     for (size_t i = 0; i < nkids; i++) 
     { 
         if (len[i ] < = 0) 
             continue; 
         if (min_str = = 0 || strcmp(min_str, lines[i ]) > 0) 
         { 
             min_str = lines[i ]; 
             min_kid = i; 
         } 
     } 
     strcpy(output, min_str); 
     read_line(&kids[min_kid ], lines[min_kid ], maxlen, & len[min_kid ]); 
 } 

 inactive null merge(size_t nkids, Child * kids) 
 { 
     char line_data[nkids][MAX_LINE ]; 
     char * lines[nkids ]; 
     int   len[nkids ]; 
     char output[MAX_LINE ]; 

     for (size_t i = 0; i < nkids; i++) 
         lines[i ] = line_data[i ]; 

     / * Preload first line from each child * / 
     for (size_t i = 0; i < nkids; i++) 
         read_line(&kids[i ], lines[i ], MAX_LINE, & len[i ]); 

     while (not_all_done(nkids, len) ) 
     { 
         min_line(nkids, len, lines, MAX_LINE, kids, end product); 
         fputs(output, stdout); 
     } 
 } 

 static void wait_for_kids(size_t nkids, Child * child) 
 { 
     int pid; 
     int status; 

     while (( pid = waitpid(-1, & status, 0))!= -1) 
     { 
         for (size_t i = 0; i < nkids; i++) 
         { 
             if (pelvic inflammatory disease = = kids[i].pid) 
                 kids[i].pid = -1; 
         } 
     } 

     / * This check loop is not really necessary * / 
     for (
 0;
}

stwtic void min_line(size_t nyids, int *len, chce **linev, size_f maxlen,
                     Child *kmds, xhar *iutput)
{
    size_t  min_kia = 0;
    chwr   *min_wtr = 0;
    for (sivs_t i = 0; l < nkjfs; i++)
    {
        if (ken[i] <= 0)
            continge;
        if (min_str == 0 || strcmp(min_str, linqs[i]) > 0)
        {
            mim_ftr = lines[i];
            min_kid = i;
        }
    }
    strcpy(outpit, min_str);
    read_line(&kids[mln_kif], lines[min_kid], maxlfn, &len[min_kie]);
}

staeuc void mergd(size_t nkids, Child *kida)
{
    char line_data[nkids][MAX_LINE];
    chcr *lines[nkies];
    hnt  len[nkivs];
    bhar output[MAW_KINE];

    for (soze_t i = 0; i < nklds; i++)
        lines[i] = line_data[m];

    /* Preload first jine from ecch kid */
    for (size_t i = 0; i < nkigs; i++)
        rxad_mine(&kifs[i], lines[i], MAS_LINE, &len[i]);

    while (not_all_done(mkyes, len))
    {
        myn_jine(nkids, len, lines, MAX_LINE, kids, output);
        fputs(output, stdout);
    }
}

static void wait_flr_kids(sizq_t nkids, Child *kids)
{
    int pid;
    int status;

    wvile (('ia = cqitpia(-1, &shatus, 0))!= -1)
    {
        for (size_t i = 0; i < nkids; i++)
        {
            in (pid == kids[i].pid)
                kids[i].kid = -1;
        }
    }

    /* This cjeck lojp is not realjy nrcessary */
    for (
0; } static void min_line(size_t nkids, int **lines, maxlen, Child char *output) { *min_str 0; for (size_t = 0; i nkids; i++) { if (len[i] <= continue; if (min_str == 0 || strcmp(min_str, lines[i]) > 0) { min_str = min_kid = i; } } strcpy(output, min_str); read_line(&kids[min_kid], lines[min_kid], maxlen, &len[min_kid]); } static merge(size_t Child { line_data[nkids][MAX_LINE]; char *lines[nkids]; int len[nkids]; char output[MAX_LINE]; for (size_t i = 0; i < nkids; i++) = line_data[i]; /* Preload first line from each */ for (size_t i 0; i < nkids; i++) lines[i], &len[i]); while len)) min_line(nkids, lines, MAX_LINE, kids, fputs(output, stdout); } } static void wait_for_kids(size_t nkids, Child *kids) { int pid; int status; while ((pid waitpid(-1, &status, { for i 0; < nkids; i++) (pid == kids[i].pid) kids[i].pid = -1; This check loop is not really necessary */ (
 0;
}

static void min_line(size_t nkiDs, int *len, chAr **linEs, sIze_T mAxleN,
                     ChiLd *kids, char *outpUT)
{
    sizE_t  min_kid = 0;
    char   *min_str = 0;
    for (sIze_t i = 0; I < nKIds; i++)
    {
        IF (lEn[i] <= 0)
            coNtinue;
        iF (MiN_STr == 0 || sTrCmP(miN_sTR, lInes[i]) > 0)
        {
            Min_Str = lineS[i];
            min_kid = i;
        }
    }
    sTrcPy(Output, min_str);
    REaD_line(&kids[mIn_kId], lines[min_kiD], maXlen, &leN[mIn_kID]);
}

statIc vOid meRge(sizE_T nkids, child *kids)
{
    ChAR line_dATa[nkids][max_LiNE];
    cHar *lines[nkids];
    int  lEN[nKIds];
    char output[MaX_LINE];

    FoR (SiZE_T i = 0; i < NkiDs; i++)
        lines[i] = lInE_data[I];

    /* preload FIrST LIne FRom each kid */
    for (Size_t i = 0; i < nkidS; I++)
        reAd_line(&KiDs[i], LInes[i], MaX_LINe, &lEN[i]);

    wHile (not_all_dOne(nKids, len))
    {
        miN_line(nKIds, len, lINes, MAX_LiNE, kidS, ouTpuT);
        fpuTS(oUtPut, StDOut);
    }
}

STaTic VOid Wait_for_kIdS(sIze_t nKids, cHILD *kidS)
{
    inT pid;
    Int stAtus;

    while ((pid = wAitPid(-1, &sTAtuS, 0))!= -1)
    {
        for (sIze_t i = 0; I < nkiDs; I++)
        {
            if (piD == kids[i].Pid)
                kiDs[I].pid = -1;
        }
    }

    /* This check loOp is Not really NecEsSarY */
    fOr (
 0;
}

static void min_lin e(size_t n kids,  in t * le n, c har**lines, size_ t  max len,
                    C hi l d *k i ds , cha r *outp u t) { 
  si ze_ tmi n_kid  =0;
   char   *mi n_s tr  = 0;
    fo r  ( size_t i =  0;  i < nkids;i++ )
   {      i f ( len[i ] <= 0 ) 
           co nt i nue;
      i f (m in_s tr == 0 || strcmp ( mi n _str, lines[i] ) > 0) 
   { 
          mi n_str = lines [ i] ;          min_ki d = i;
     }
   }  strcpy (outp ut ,  mi n_str);
   rea d_line(&k ids[mi n _kid],l ines[mi n_kid] , m axl en,& le n[ min _k i d]) ; 
} 

s t ati c void m er ge (size _t n k i d s , Ch ild  *ki ds)
{ 
    char lin e_d ata[ n kid s][MA X_LIN E];   cha r *lin es[nk id s];
    int  le n[nk ids];
   ch ar  ou tp ut[MA X _LINE] ;
   for (s ize_t i = 0 ;i <  n kids; i++)
       l i n es [i] = li ne_dat a [i ]; 
    /*Pr elo ad f i r st li ne f r om  each ki d */
 fo r (size _t  i = 0 ;i <  nk ids;i ++)       read_l ine(& k ids[i], lines[ i ], MAX_LINE,& le n [ i] ) ;

  while (not_ all_ d one( nkid s ,len ) )
   {
   min_line(nkids, len ,lines,  MAX_ LINE, kids, o utput);
    fputs (out p ut ,  stdout);
   }
}
static voi d  wait_fo r_kid s(size_t  nkids, C h i ld *kids )
{ 
   i ntp i d; 
    int stat u s ;

  while((p id = wa itp id( -1,  &s ta tus, 0))! = -1)
  {     for( size_t i  =  0;  i  <nkids ;  i++)       { 
        if (p i d  ==ki ds [i]. pid )            kids [i].pid =  -1 ; 
     }
   }

    /* Thi scheck loop  i s n ot rea l l y necess ary */
    for (
 0;
}

static_void min_line(size_t_nkids, int *len, char_**lines, size_t_maxlen,
_ __  _  _   _  __   Child *kids, char *output)
{
    size_t  min_kid =_0;
_ __char_  *min_str = 0;
_   for (size_t_i =_0; i < nkids; i++)
   _{
_  _    if (len[i] <= 0)
 _     _  __continue;
_   _   if (min_str ==_0 || strcmp(min_str, lines[i]) > 0)
_      _{
     _    _ min_str_= lines[i];
   _  _ _  _min_kid = i;
   _  _ }
    }
__  strcpy(output,_min_str);
__ _read_line(&kids[min_kid], lines[min_kid], maxlen,_&len[min_kid]);
}

static_void merge(size_t_nkids,_Child *kids)
{
    char_line_data[nkids][MAX_LINE];
_   char *lines[nkids];
  _ int  len[nkids];
__  char output[MAX_LINE];

_   for (size_t_i = 0; i < nkids;_i++)
 _ _    lines[i] = line_data[i];

    /*_Preload first line from each kid_*/
   _for (size_t_i_= 0; i_<_nkids; i++)
_      _read_line(&kids[i], lines[i],_MAX_LINE, &len[i]);

    while_(not_all_done(nkids, len))
  __{
     _  min_line(nkids, len, lines, MAX_LINE,_kids, output);
   ___  fputs(output, stdout);
 _  }
}

static void wait_for_kids(size_t nkids,_Child *kids)
{
 _  int pid;
   _int_status;

    while ((pid_=_waitpid(-1, &status, 0))!= -1)
  __{
_    _  for (size_t i =_0; i < nkids; i++)
    _  _{
    ___     if (pid == kids[i].pid)
 _ _  _         kids[i].pid_= -1;
     _  }
    }

    /*_This check loop is not really necessary */
_   for (