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Nov 15th, 2019
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  1. #include <stdio.h>
  2. #include <stdlib.h>
  3. #include <time.h>
  4.  
  5. typedef struct node_def node;
  6. struct node_def
  7. {
  8. int val;
  9. node *next;
  10. };
  11.  
  12. node *makeNode(int val);
  13. node *insertFront(node *head, node *new);
  14. void printList(node *head);
  15. node *deleteNode(node *head, int val);
  16. node *modifyNode(node *head, int old, int new);
  17. int inList(node *head, int val);
  18. void lookForDupes(node *L);
  19. // int length(node *L);
  20.  
  21. node *head = NULL;
  22.  
  23. int main()
  24. {
  25.  
  26. node *tmp = NULL;
  27. srand(time(NULL));
  28. int num = rand()%10000;
  29.  
  30.  
  31.  
  32. int val;
  33. printf("How many nodes? ");
  34. scanf("%d", &val);
  35. for (int i=1; i<val; ++i) {
  36. num = rand()%10000;
  37. makeNode(num);
  38. }
  39. printList(head);
  40. return 0;
  41. }
  42.  
  43. /**
  44. * create a node for your list
  45. * return a pointer to that node (node *)
  46. */
  47. node *makeNode(int val)
  48. {
  49. node *new = malloc(sizeof(node));
  50. printf("\n %d\n", val);
  51. new->val = val;
  52. new->next = head;
  53. insertFront(head, new);
  54. return(new);
  55. }
  56.  
  57. /**
  58. * add a node to the front of the list
  59. * return new front of list
  60. */
  61. node *insertFront(node *head, node *new)
  62. {
  63. head = new;
  64. new = NULL;
  65.  
  66. }
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