Function Returning Itself

Question

Is it possible to declare some function type func_t which returns that type, func_t?

In other words, is it possible for a function to retur

Answer 1

You can't cast function pointers to void* (they can be different sizes), but that's not a problem since we can cast to another function pointer type and cast it back to get the original value.

typedef void (*fun2)();
typedef fun2 (*fun1)();

fun2 rec_fun()
{
    puts("Called a function");
    return (fun2)rec_fun;
}

// later in code...
fun1 fp = (fun1)((fun1)rec_fun())();
fp();

Output:

Called a function
Called a function
Called a function