C syntax for functions returning function pointers

Question

Consider the following typedefs :

typedef int (*f1)(float);
typedef f1 (*f2)(double);
typedef f2 (*f3)(int);

f2 is a function

Answer 1

Just don't. It can be done, but it will be very confusing. Typedef's are there to ease writing and reading this short of code.

A function f that takes no arguments and returns a function pointer int (*)(float) would probably be something like (untested):

int (*f())(float);

Then for the rest you just need to keep adding parenthesis until it looks like lisp.