struct    _attrs
{
    unsigned reserved : 2;
    unsigned is_archivable : 1;
    unsigned is_dir : 1;
    unsigned is_label : 1;
    unsigned is_system : 1;
    unsigned is_hidden : 1;
    unsigned is_readonly : 1;
};

struct _files
{
    char filename[80];
    struct _attrs attribute;
} files[MAXFILES];

    .
    .
    if(files[i].attribute.is_readonly)
        printf("\nFile is READ ONLY");
    .
    .