C PROGRAMMING ONLY:

I need to write the function, memcheck_free, which will search through the linked list in linear order, searching for an item in the list that matches the memory address that is being freed. If it finds the address, it should remove it from the list and actually free the memory. If it is not found it should print an error message (see below), but not free the memory.

void checked_free_fn(void *ptr, char *file, int line){ code here please }