Message Queue with fork() help

hi all...
ive been trying this program where i spawn 4 threads... and i am trying to use message queue to send msgs from 3 of the threads to the parent thread... but it doent seem to be working... ive almost pulled out my hair tryin to fix the prob

another wierd thing is that it worksthe 1st time when i reboot the system then stops workin

also im getting the msgqid=0...

here is the code:

#include<stdio.h>
#include<sys/types.h>
#include<sys/ipc.h>
#include<sys/msg.h>
#include<stdlib.h>
#include<errno.h>
 
struct message
{
        int type;
        int msg;
};
 
int main(void)
{
        pid_t pid0,pid1,pid_p,pid_c1,pid_c2,pid_c3;
        key_t key;
        int msgqid;
        //extern int errno;
        struct message *msgs,*msgr;
        pid_p=getpid();
 
        if((key=ftok("abc.txt",'c'))==-1)
                perror("Error in ftok\n");
        else
                printf("Ftok executed.Key=%d\n",key);
 
        if((msgqid=(msgget(key,0666|IPC_CREAT))==-1))
                perror("Error creating queue\n");
        else
                printf("Queue created.MSGQID=%ld\n",msgqid);
 
        pid0=fork();
        if(pid0<0)
        {
                perror("Error in fork\n");
        }
 
        pid1=fork();
        if(pid1<0)
        {
                perror("Error in fork\n");
        }
 
        if(pid0==0 && pid1==0)
        {
                pid_c1=getpid();
                printf("In child.Process ID=%d\n",pid_c1);
                msgs->type=1;
                msgs->msg=1;
                if(msgsnd(msgqid,&(msgs->type),sizeof(struct message),1)==-1)
                {       printf("%d\n",errno);perror("Message not sent.Type 1\n");}
 
                else
                        printf("Message sent.Type 1\n");
        }
 
        if(pid0==0 && pid1!=0)
        {
                pid_c2=getpid();
                printf("In child.Process ID=%d\n",pid_c2);
                msgs->type=2;
                msgs->msg=2;
                if(msgsnd(msgqid,&(msgs->type),sizeof(struct message),2)==-1)
                        perror("Message not sent.Type 2\n");
                else
                        printf("Message sent.Type 2\n");
        }
 
        if(pid0!=0 && pid1==0)
        {
                pid_c3=getpid();
                printf("In child.Process ID=%d\n",pid_c3);
                msgs->type=3;
                msgs->msg=3;
                if(msgsnd(msgqid,&(msgs->type),sizeof(struct message),3)==-1)
                        perror("Message not sent.Type 3\n");
                else
                        printf("Message sent.Type 3\n");
        }
 
        if(pid0!=0 && pid1!=0)
        {
                wait(NULL);
                wait(NULL);
                wait(NULL);
                printf("In parent.Process ID=%d\n",pid_p);
                                 
                if(msgrcv(msgqid,&(msgr->type),sizeof(struct message),1,0)==-1)
                        perror("Message not recvd.Type 1\n");
                else
                        printf("Message revcd.Type 1\n");
 
                if(msgrcv(msgqid,&(msgr->type),sizeof(struct message),2,0)==-1)
                        perror("Message not recvd.Type 2\n");
                else
                        printf("Message revcd.Type 2\n");
 
                if(msgrcv(msgqid,&(msgr->type),sizeof(struct message),3,0)==-1)
                        perror("Message not recvd.Type 3\n");
                else
                        printf("Message revcd.Type 3\n");
 
                if(msgctl(msgqid,IPC_RMID,NULL)==-1)
                        perror("Error removing queue\n");
                else
                        printf("Queue removed\n");
        }
 
        exit(0);
}

I cannot read your code, so it's hard to get the logic flow. Please use code tags.

As far as I can tell, you have the right calls to create a msg queue, create a msg and read a msg. I just cannot see your logic.