Receiving from message queues

I have successfully created the message queue by using the following command:

msgIdHareTurtle =  msgget(keyHareTurtle, 0644 | IPC_CREAT | O_NONBLOCK);  

Now I want to send the queue to some other process I used,

msgsnd(msgIdHareTurtle, (struct msgbuf *)&bufHareTurtle, sizeof(int), IPC_NOWAIT);  

and I try to receive it in different process by:

msgrcv(msgIdHareTurtle, (struct msgbuf *)&bufHareTurtle, sizeof(int), 0, IPC_NOWAIT);

my structure bufHareTurtle is of following type:

typedef struct smsgbuf{
    long mtype;
    unsigned int position;
} smsgbuf; 

My question: The sending was successful and the program(both the processes) is running too but whenever I am sending an unsigned integer for example 2 , I AM ALWAYS GETTING THE RECEIVED 开发者_如何学编程VALUE (IN LATTER PROCESS) AS 0 EVRYTIME. Could somebody tell me what is the error in this code or what could be possible error elsewhere.

The problem was there in synchronization. The sending to the queue was delayed due to sleep inserted in between. I corrected it and the error was gone