How do you pass a function as a parameter in C?

Question

I want to create a function that performs a function passed by parameter on a set of data. How do you pass a function as a parameter in C?

Answer 1

See code snippet below. You can define a function that takes a function pointer as input. In example below it takes 2 integers and returns an integer

#include <stdio.h>

typedef int (*function_ptr_t)(int, int);

int

test1 (int param1, int param2)

{

  return param1 + param2;

}