What does this C statement mean?

Question

I came across this line:

void (*(*x)(void (*[10])(int *)))(int *) 

Can anybody tell me what it is?

Answer 1

To break this down yourself, start from the inner most parentheses and work your way out.

1. (*[10]) <---- Array of 10 pointers
2. (*[10])(int *) <------ Array of 10 pointers to functions which has a pointer to int as its argument
3. (void (*[10])(int *)) <------ Array of 10 pointers to functions which has a pointer to int as its argument and returns void
4. (*x)(void (*[10])(int *)) <------- x is a pointer to a function which has as an argument (an array of 10 pointers to functions which has a pointer to int as its argument and returns void)

.....

I stopped partway through, but hopefully that helps.