Question

Everytime I look at a C function pointer, my eyes glaze over. I can’t read them.

From here, here are 2 examples of function pointer TYPEDEFS:

typedef int (*AddFunc)(int,int);
typedef void (*FunctionFunc)();

Now I’m used to something like:

typedef vector<int> VectorOfInts ;

Which I read as

typedef vector<int> /* as */ VectorOfInts ;

But I can’t read the above 2 typedefs. The bracketing and the asterisk placement, it’s just not logical.

Why is the * beside the word AddFunc..?

Answer 1

The actual type of the first one is

int (*)(int,int);

(that is, a pointer to a function that takes two parameters of type int and returns an int)

The * identifies it as a function pointer. AddFunc is the name of the typedef.

cdecl can help with identifying particularly complex type or variable declarations.