problem-10

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

// Define the message structure
struct message {
    long msg_type;         // Message type
    char msg_text[100];    // Message text
};

int main() {
    // Generate a unique key for the message queue
    key_t key = ftok("msgqfile", 65);

    // Create a new message queue (or get the identifier of an existing one)
    int msgid = msgget(key, IPC_CREAT | 0666);
    if (msgid == -1) {
        perror("msgget");
        exit(EXIT_FAILURE);
    }

    // Create a message structure
    struct message msg;
    msg.msg_type = 1;  // Message type (can be any positive number)
    
    // Producer: Send a message to the message queue
    strcpy(msg.msg_text, "Hello, message queue!");
    if (msgsnd(msgid, (void*)&msg, sizeof(msg.msg_text), IPC_NOWAIT) == -1) {
        perror("msgsnd");
        exit(EXIT_FAILURE);
    }
    printf("Producer: Data sent to message queue: %s\n", msg.msg_text);

    // Consumer: Receive a message from the message queue
    if (msgrcv(msgid, (void*)&msg, sizeof(msg.msg_text), 1, 0) == -1) {
        perror("msgrcv");
        exit(EXIT_FAILURE);
    }
    printf("Consumer: Data received from message queue: %s\n", msg.msg_text);

    // Remove the message queue
    if (msgctl(msgid, IPC_RMID, NULL) == -1) {
        perror("msgctl");
        exit(EXIT_FAILURE);
    }

    return 0;
}