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  1. #include<stdio.h>
  2. #include<stdlib.h>
  3.  
  4. typedef struct node{
  5. 	int val;
  6. 	struct node *next;
  7. }Node;
  8.  
  9. Node *head = NULL;
  10.  
  11. Node *createN(int x){
  12. 	Node *newnode;
  13. 	newnode = (Node*)malloc(sizeof(Node));
  14. 	newnode->val = x;
  15. 	newnode->next = NULL;
  16. 	return newnode;
  17. }
  18.  
  19. void initL(int n){
  20. 	int x,i;
  21. 	Node *p;
  22. 	scanf("%d",&x);
  23. 	head = createN(x);
  24. 	p = head;
  25. 	for(i=1;i<n;i++){
  26. 		scanf("%d",&x);
  27. 		p->next = createN(x);
  28. 		p = p->next;
  29. 	}
  30. }
  31.  
  32. void freeL(){
  33. 	Node *p;
  34. 	while(head!=NULL){
  35. 		p = head->next;
  36. 		free(head);
  37. 		head = p;
  38. 	}
  39. }
  40.  
  41. void printN(Node *a){
  42. 	if(a == NULL) printf("NULL\n");
  43. 	else printf("%d\n",a->val);
  44. }
  45.  
  46. void printL(){
  47. 	Node *p = head;
  48. 	while(p != NULL){
  49. 		printf("%d",p->val);
  50. 		p = p->next;
  51. 	}
  52. 	printf("\n");
  53. }
  54.  
  55. Node *getN(int n){
  56. 	int i;
  57. 	Node *p;
  58. 	p = head;
  59. 	for(i=1; i<n;i++){
  60. 		p = p->next;
  61. 	}
  62. 	return p;
  63. }
  64.  
  65. int main(void){
  66. 	int i,n,x1;
  67. 	Node *k;
  68. 	scanf("%d",&n);
  69. 	initL(n);
  70. 	printL();
  71. 	scanf("%d",&x1);
  72. 	k = getN(x1);
  73. 	printN(k);
  74. 	freeL();
  75. 	return 0;
  76. }
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Success #stdin #stdout 0s 5320KB
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https://ideone.com/pc2r07
language:
C (gcc 8.3)
created:
3 days ago
visibility:
public

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