What does "typedef void (*Something)()" mean

Question

I am trying to understand what this means, the code I am looking at has

in .h

typedef void (*MCB)();
static MCB     m_process;

in .C

MCB Modes::m_process = NULL;

And sometimes when I do

m_process();

I get segmentations fault, it's probably because the memory was freed, how can I debug when it gets freed?

user_6284221 · Answer

Let's take an example

typedef void (*pt2fn)(int);

Here, we are defining a type pt2fn. Variables of this type point to functions, that take an integer as argument and does not return any value.

pt2fn kk;

Here, kk is a variable of type pt2fn, which can point to any function that takes in an integer as input and does not return any value.