Listing_3

#include <stdio.h>
#include <sys/ipc.h>
#include <sys/msg.h>
#include <sys/types.h>
#include <string.h>

struct msgbuf {
    long type;
    char mtext[50];
};

void send_message(int mqid, const char *message)
{
    struct msgbuf buffer;
    buffer.type = 1;  // Ustawia typ komunikatu na 1
    strncpy(buffer.mtext, message, sizeof(buffer.mtext));

    if (msgsnd(mqid, &buffer, sizeof(buffer.mtext), 0) < 0)
        perror("msgsnd");
    else
        printf("Wysłano komunikat: %s\n", buffer.mtext);
}

int main(void)
{
    int key = ftok("/tmp", 8);
    if (key < 0)
        perror("ftok");

    int id = msgget(key, 0600 | IPC_CREAT | IPC_EXCL);
    if (id < 0)
        perror("msgget");

    send_message(id, "Hello, message!");

    if (msgctl(id, IPC_RMID, 0) < 0)
        perror("msgctl");

    return 0;
}