C message queue created with random permission - c

Question

When I create message queues and later check the permissions using ipcs -q I get random permissions for the message queues I created.
I really don't understand the reason and it's driving me insane.
I pass the ids of the message queues at the children by writing them in an array and passing it using execve. Below is the array.
char *shipArgs[12];
shipArgs[0] = "nave";
shipArgs[1] = "-1";
shipArgs[2] = sSO_LATO;
shipArgs[3] = sidMesQPur;
shipArgs[4] = sidMesQInfo;
shipArgs[5] = sSO_DAYS;
shipArgs[6] = sidShmArrayItems;
shipArgs[7] = sidShmArrayHarb;
shipArgs[8] = sidShmArrayShips;
shipArgs[9] = sSO_SPEED;
shipArgs[10] = sSO_CAPACITY;
shipArgs[11] = NULL;
I read the array this way in the child process:
id = atoi(argv[1]);
idMesQPur = atoi(argv[3]);
idMesQInfo = atoi(argv[4]);
SO_DAYS = atol(argv[5]);
idShmArrayItems = atoi(argv[6]);
idShmArrayHarb = atoi(argv[7]);
idShmArrayShips = atoi(argv[8]);
SO_SPEED = atoi(argv[9]);
SO_CAPACITY = atoi(argv[10]);
I create the message queues in this way:
idMesQPur = msgget(IPC_PRIVATE, IPC_CREAT | 0666);
When lauched I got the errors "Permission denied" while trying to access the message queues. When checking the message queue's permission using ipcs -q I get a random value; for example I got this result:
0x00000000 63 32564 464 0 0
0x00000000 64 32564 464 0 0
0x00000000 65 32564 464 0 0
but the after adding some spaces and building everything again the program worked and the message queues had these values:
0x00000000 66 32762 772 0 0
0x00000000 67 32762 772 0 0
0x00000000 68 32762 772 0 0
Everytime I launch the program it's random if it will work or give those errors.