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  1. #include <stdio.h>
  2. #include <stdlib.h>
  3.  
  4. struct node {
  5. 	int value;
  6. 	struct node* next;
  7. };
  8. typedef struct node node_t;
  9.  
  10. node_t* create_linked_list(unsigned int number_of_nodes) {
  11. 	node_t* head = NULL;
  12.  
  13. 	for (unsigned int i = 1; i < number_of_nodes + 1; ++i) {
  14. 		/*
  15. 		 * malloc might be necessary so that the node doesn't
  16. 		 * get wiped from memory once the for loop is over?
  17. 		 * TODO: Find out if that is why it's necessary.
  18. 		*/
  19. 		node_t* node = malloc(sizeof(node_t));
  20. 		node->value = i;
  21. 		node->next = head;
  22. 		head = node;
  23. 	}
  24.  
  25. 	return head;
  26. }
  27.  
  28. void print_list(node_t* head) {
  29. 	node_t* temp = head;
  30.  
  31. 	while (temp != NULL) {
  32. 		printf("%d - ", temp->value);
  33. 		temp = temp->next;
  34. 	}
  35.  
  36. 	printf("\n");
  37. }
  38.  
  39. void clean_list(node_t* head) {
  40. 	node_t* current = head;
  41.  
  42. 	while (current != NULL) {
  43. 		node_t* temp = current;
  44. 		current = current->next;
  45. 		free(temp);
  46. 	}
  47.  
  48. 	printf("\nclean_list complete \n");
  49. }
  50.  
  51. int main(void) {
  52. 	node_t* head = create_linked_list(15);
  53.  
  54. 	printf("head address at beginning = %p\n", head);
  55. 	printf("head value at the beginning = %d\n\n", (*head).value);
  56.  
  57. 	print_list(head);
  58.  
  59. 	clean_list(head);
  60.  
  61. 	printf("\nhead address at the end = %p", head);
  62. 	printf("\nhead value at the end = %d", (*head).value);
  63.  
  64. 	return 0;
  65. }
  66.  
Success #stdin #stdout 0s 4776KB
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Standard input is empty
stdout
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head address at beginning = 0x55a30f0fe420
head value at the beginning = 15

15 - 14 - 13 - 12 - 11 - 10 - 9 - 8 - 7 - 6 - 5 - 4 - 3 - 2 - 1 - 

clean_list complete 

head address at the end = 0x55a30f0fe420
head value at the end = 0
https://ideone.com/JNfXIY
language:
C (gcc 8.3)
created:
4 years ago
visibility:
public

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