#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <stdio.h>

int main()
{
    printf("O_RDONLY = %d = 0%o\n",O_RDONLY,O_RDONLY);
    printf("O_WRONLY = %d = 0%o\n",O_WRONLY,O_WRONLY);
    printf("O_RDWR = %d = 0%o\n",O_RDWR,O_RDWR);
    printf("O_CREAT = %d = 0%o\n",O_CREAT,O_CREAT);
    printf("O_TRUNC = %d = 0%o\n",O_TRUNC,O_TRUNC);
    printf("O_APPEND = %d = 0%o\n",O_APPEND,O_APPEND);
    printf("O_EXCL = %d = 0%o\n",O_EXCL,O_EXCL);
    printf("O_DIRECT = %d = 0%o\n",O_DIRECT,O_DIRECT);
    printf("O_FSYNC = %d = 0%o\n",O_FSYNC,O_FSYNC);
    printf("O_NOFOLLOW = %d = 0%o\n",O_NOFOLLOW,O_NOFOLLOW);

}