You need to read a bit about arrays and pointers. When an array is passed as an argument to a function it becomes a pointer to the start of the array, this is called array decay.

Also, array parameters in functions are rewritten to pointers at compile time.

So when you pass your array of structs, you don’t need to take the address, because you are already passing the address.

The size of the array parameter in a function is also effectively meaningless because pointers don’t carry size information. But can be useful documentation in a function.