free the memory of linked list.

[xinwu]

Hi, everyone! The following code creates a linked list, and then free the memory for the list. I'm just a starter on C. Is the code correct? Thanks in advance!

#include <stdlib.h>
#define MAX 3

int main (void) {
  int i;
  struct list {
    char c;
    struct list *next;
  };
  struct list *start, *list_ptr;
  start = malloc(sizeof(struct list));
  list_ptr = start;
  for (i = 0; i < MAX; i++) {
    list_ptr->next = malloc(sizeof(struct list));
    list_ptr = list_ptr->next;
  }
  list_ptr->next = NULL;
  while (start) {
    list_ptr = start;
    start = list_ptr->next;
    free(list_ptr);
  }
  return 0;
}

[Prelude]

It's correct in that the list is properly created and destroyed, yes.

[xinwu]

Thank you! Now, I'm confident I understand some basic concepts in C.