Generally, in order to initialize a `struct` in c, we could only specify part of the fields. Like below:

```
static struct fuse_operations hello_oper = {
    .getattr    = hello_getattr,
    .readdir    = hello_readdir,
    .open       = hello_open,
    .read       = hello_read,
};

```

However, in C++, we should initialize the variables in the `struct` without naming the fields. 
Now, what if I would like to initialize a `struct` using the c style while using the g++ compiler, how to accomplish this? PS: the reason I need to do this is that the `struct fuse_operations` has too many fields in it.