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

struct msgbuf {
    long mtype;
    char mtext[100];
};

int main() {
    key_t key;
    int msgid;
    struct msgbuf message;

    // Generate unique key
    key = ftok("progfile", 65);

    // Create message queue and return identifier
    msgid = msgget(key, 0666 | IPC_CREAT);
    if (msgid == -1) {
        perror("msgget");
        exit(EXIT_FAILURE);
    }

    // Prepare the message
    message.mtype = 1;  // Message type
    strcpy(message.mtext, "Hello from sender!");

    // Send the message
    if (msgsnd(msgid, &message, sizeof(message.mtext), 0) == -1) {
        perror("msgsnd");
        exit(EXIT_FAILURE);
    }

    printf("Message sent: %s\n", message.mtext);
    return 0;
}