C / C++ / MFC

timeval timeOut; 
timeOut.tv_sec = 0; 
timeOut.tv_usec = 3000*1000; 

fd_set fdread, fdExcept; 
FD_ZERO(&fdread); 
FD_ZERO(&fdExcept); 
FD_SET(sock,&fdread);  
FD_SET(sock,&fdExcept);  

int iRet = 0; 
iRet = select(0, &fdread, NULL, &fdExcept, &timeOut); 

if(FD_ISSET(sock,&fdread)) 
{ 
          //can read
  int iRecv = recv(sock, strRecv, 512*1024, 0);// extern char strRecv[512*1024] 
          /* 
If receive buffer has been received 1024 BYTE, recv() no problem. after recv(), iRecv equals 1024.
If receive buffer has been received a lot data, 50*1024 for example, recv() has problem.
strRecv has not got data what is from send() and iRecv not equals 50*1024.
notes: If no select(), only use recv(), that no problem when recv() 50*1024 BYTE
                        */ 
} 

struct Pos {
int x
int y
};

char line[66] = "spawn = 1648\t3411\t3536\t0\t3412\t3537\t3410\t3510\t2\tCRAWLING HAND\0";
int npcId;
Pos coords;
int heightLevel = 0;
Pos moveRange1;
Pos moveRange2;
int direction;
//spawn = %d%*[\t]%d%*[\t]%d%*[\t]%d%*[\t]%d%*[\t]%d%*[\t]%d%*[\t]%d%*[\t]%d
sscanf(line,"spawn%*[ ]=%*[ ]%d%*[\t]%d%*[\t]%d",&npcId, &coords.x, &coords.y); //* = ignore
printf("npcID = %d\n", npcId); //********* fails *********
printf("coords x = %d\n", coords.x);
printf("coords y = %d\n", coords.y);
sscanf(line,"spawn%*[ ]=%*[ ]%d%*[\t]%d%*[\t]%d",&npcId, &coords.x); //* = ignore
printf("npcID = %d\n", npcId); //********* WORKS??????? *********
printf("coords x = %d\n", coords.x);
printf("coords y = %d\n", coords.y);