| 1 | #include <stdio.h> |
| 2 | |
| 3 | class Task { |
| 4 | public: |
| 5 | int id; |
| 6 | Task *next; |
| 7 | Task(int i, Task *n): |
| 8 | id(i), |
| 9 | next(n) |
| 10 | {} |
| 11 | }; |
| 12 | |
| 13 | |
| 14 | int main (int argc, char const *argv[]) |
| 15 | { |
| 16 | Task *task_head = NULL; |
| 17 | Task *task1 = new Task(1, NULL); |
| 18 | Task *task2 = new Task(2, NULL); |
| 19 | Task *task3 = new Task(3, NULL); // Orphaned. |
| 20 | Task *task4 = new Task(4, NULL); |
| 21 | Task *task5 = new Task(5, NULL); |
| 22 | |
| 23 | task_head = task1; |
| 24 | task1->next = task2; |
| 25 | task2->next = task4; |
| 26 | task4->next = task5; |
| 27 | |
| 28 | int total = 0; |
| 29 | Task *t = task_head; |
| 30 | while (t != NULL) { |
| 31 | if (t->id >= 0) |
| 32 | ++total; |
| 33 | t = t->next; |
| 34 | } |
| 35 | printf(format: "We have a total number of %d tasks\n" , total); |
| 36 | |
| 37 | // This corresponds to an empty task list. |
| 38 | Task *empty_task_head = NULL; |
| 39 | |
| 40 | Task *task_evil = new Task(1, NULL); |
| 41 | Task *task_2 = new Task(2, NULL); |
| 42 | Task *task_3 = new Task(3, NULL); |
| 43 | task_evil->next = task_2; |
| 44 | task_2->next = task_3; |
| 45 | task_3->next = task_evil; // In order to cause inifinite loop. :-) |
| 46 | |
| 47 | return 0; // Break at this line |
| 48 | } |
| 49 | |