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  1. #include <iostream>
  2. #include <list>
  3.  
  4. using namespace std;
  5.  
  6. void printList(list<int> list);
  7. void printList(list< list<int> > list);
  8. void printListPointers(list<int> list);
  9. void printListPointers(list< list<int> > list);
  10.  
  11. class List {
  12.     public:
  13.         List(int, int);
  14.         list< list<int> > root;
  15. };
  16.  
  17. List::List(int a, int b) {
  18.     list<int> l;
  19.     l.push_back(a);
  20.     l.push_back(b);
  21.     root.push_back(l);
  22.     cout << "constructor, values: root "; printList(root); cout << endl;
  23.     cout << "constructor, values: first node in root "; printList(*(root.begin())); cout << endl;
  24.     cout << "constructor, pointers: root "; printListPointers(root); cout << endl;
  25.     cout << "constructor, pointers: first node in root "; printListPointers(*(root.begin())); cout << endl;
  26. }
  27.  
  28. int main() {
  29. 	List foo = List(2, 3);
  30.     cout << "main, values: root "; printList(foo.root); cout << endl;
  31.     cout << "main, values: first node in root "; printList(*(foo.root.begin())); cout << endl;
  32.     cout << "main, pointers: root "; printListPointers(foo.root); cout << endl;
  33.     cout << "main, pointers: first node in root "; printListPointers(*(foo.root.begin())); cout << endl;
  34.  
  35. 	return 0;
  36. }
  37.  
  38. void printList(list<int> l) {
  39.     cout << "{";
  40.     for (list<int>::iterator it = l.begin(); it != l.end(); it++) {
  41.         cout << *it << ", ";
  42.     }
  43.     cout << "}";
  44. }
  45.  
  46. void printList(list< list<int> > l) {
  47.     cout << "{";
  48.     for (list< list<int> >::iterator it = l.begin(); it != l.end(); it++) {
  49.         printList(*it);
  50.     }
  51.     cout << "}";
  52. }
  53.  
  54. void printListPointers(list<int> l) {
  55.     cout << "{";
  56.     for (list<int>::iterator it = l.begin(); it != l.end(); it++) {
  57.         cout << &*it << ", ";
  58.     }
  59.     cout << "}";
  60. }
  61.  
  62. void printListPointers(list< list<int> > l) {
  63.     cout << "{";
  64.     for (list< list<int> >::iterator it = l.begin(); it != l.end(); it++) {
  65.         cout << &*it << ", ";
  66.     }
  67.     cout << "}";
  68. }
Success #stdin #stdout 0.01s 2820KB
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stdin
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Standard input is empty
stdout
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constructor, values: root {{2, 3, }}
constructor, values: first node in root {2, 3, }
constructor, pointers: root {0x96ff068, }
constructor, pointers: first node in root {0x96ff090, 0x96ff080, }
main, values: root {{2, 3, }}
main, values: first node in root {2, 3, }
main, pointers: root {0x96ff068, }
main, pointers: first node in root {0x96ff010, 0x96ff020, }
https://ideone.com/8DtshX
language:
C++ (gcc 8.3)
created:
12 years ago
visibility:
public

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