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  1. #include <iostream>
  2. using namespace std;
  3. struct node {
  4. 	double data;
  5. 	struct node *next;
  6. };
  7. void printlist(node *list);
  8. void insert_head(node *list);
  9. int main() {
  10. 	// your code goes here
  11. 	node *fir_node = new node();
  12. 	node *sec_node = new node();
  13. 	node *thir_node = new node();
  14. 	fir_node->data = 1;
  15. 	sec_node->data = 2;
  16. 	thir_node->data = 3;
  17. 	fir_node->next = sec_node;
  18. 	sec_node->next = thir_node;
  19. 	thir_node->next = nullptr;
  20. 	cout << "創建初始串列為:" << endl;
  21. 	printlist(fir_node);
  22. 	cout <<"插入在頭端後的串列為"<< endl;
  23. 	insert_head(fir_node);
  24. 	printlist(fir_node);
  25. 	return 0;
  26. }
  27.  
  28. void printlist(node *list) {
  29. 	node *cur = new node(); //宣告一個指標，並指向initial list
  30. 	cur = list;
  31. 	while (cur != nullptr) {
  32. 		cout << cur->data << endl;
  33. 		cur = cur->next;
  34. 	}
  35. 	//delete cur;
  36. }
  37. void insert_head(node *list){
  38. 	node *newnode = new node();
  39. 	newnode->data = list->data - 0.5;
  40. 	newnode->next = list;
  41. 	list = newnode;
  42. }
Success #stdin #stdout 0s 15240KB
comments (?)
stdin 
Standard input is empty
stdout 
創建初始串列為:
1
2
3
插入在頭端後的串列為
1
2
3
https://ideone.com/RPwGvy
language:
C++ (gcc 8.3)
created:
5 years ago
visibility:
public

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