#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <fcntl.h>
#include <unistd.h>
#include <sys/shm.h>
#include <sys/stat.h>
#include <sys/mman.h>

int main(){
    const int shmSize = 4096;
    const char* shmName = "FOX";
    const char* message_0 = "Hello, ";
    const char* message_1 = "Shared Memory!\n";

    int shm_fd;     // Shared memory to file descripter
    char* ptr;      // Shared memory to pointer

    shm_fd = shm_open(shmName, O_CREAT | O_RDWR, 0666);
    ftruncate(shm_fd, shmSize);

    ptr = (char*) mmap(0, shmSize, PROT_READ | PROT_WRITE, MAP_SHARED, shm_fd, 0);

    sprintf(ptr, "%s", message_0);
    ptr += strlen(message_0);
    sprintf(ptr, "%s", message_1);
    ptr += strlen(message_1);

    return 0;
}