How to receive unnamed structures as function parameters in C?
c, function-parameter, function-prototypes, struct
Solution
For alignment reasons, this prototype should work:
void fun(int *x);
And of course:
void fun(void *x);
I don't see an easy way to actually use the structure effectively in the function; perhaps declare it again inside that function and then assign the `void *` ?
EDIT as requested
6.7.2.1 - 15
A pointer to a structure object, suitably converted, points to its initial member (or if that member is a bit-field, then to the unit in which it resides), and vice versa. There may be unnamed padding within a structure object, but not at its beginning.
Problem
Yesterday while going through this question, I found a curious case of passing and receiving unnamed structures as function parameters. For example, if I have a structure like this, ``` int main () { struct { int a; } var; fun(&var); } ``` Now, what should the prototype of `fun` be? And how can I use that structure as a structure(pointer) in the function `fun`?