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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 printL(){
  42. 	Node *p = head;
  43. 	while(p!=NULL){
  44. 		printf("%d",p->val);
  45. 		p = p->next;
  46. 	}
  47. 	printf("\n");
  48. }
  49.  
  50. void insHead(int x){
  51. 	Node *p;
  52. 	p = createN(x);
  53. 	p->next = head;
  54. 	head = p;
  55. }
  56.  
  57. void delHead(){
  58. 	Node *p;
  59. 	p = head;
  60. 	head = head->next;
  61. 	free(p);
  62. }
  63.  
  64. int main(void){
  65. 	int i,n,x1;
  66. 	scanf("%d",&n);
  67. 	initL(n);
  68. 	printL();
  69. 	scanf("%d",&x1);
  70. 	insHead(x1);
  71. 	printL();
  72. 	delHead();
  73. 	printL();
  74. 	freeL();
  75. 	return 0;
  76. }
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Success #stdin #stdout 0s 5308KB
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https://ideone.com/TtTkm4
language:
C (gcc 8.3)
created:
1 day ago
visibility:
public

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