fork download
copy 
  1. #include <iostream>
  2. using namespace std;
  3. static void testDifferentAnd()
  4. {
  5.     const int a = 1, b = 2;
  6.     cout << noboolalpha << (a&b) << (a&&b) << endl;
  7. }
  8. struct A
  9. {
  10.     static inline int livingInstances;
  11.     A() { cout << "A::A()\n"; livingInstances++; }
  12.     ~A() { cout << "A::~A()\n"; livingInstances--; }
  13. };
  14. int main() {
  15.     {
  16.         cout << string(10, '-') << "1:\n";
  17.         testDifferentAnd();
  18.         A a();
  19.     }
  20.     {
  21.         cout << string(10, '-') << "2:\n";
  22.         A a;
  23.         {
  24.             A a{};
  25.         }
  26.     }
  27.     {
  28.         cout << string(10, '-') << "3:\n";
  29.         A a[2];
  30.         {
  31.             const A& a = A();
  32.         }
  33.     }
  34.     {
  35.         cout << string(10, '-') << "4:\n";
  36.         A* a2 = new A();
  37.         A* a3 = new A[2];
  38.     }
  39.     {
  40.         cout << string(10, '-') << "5:\n";
  41.         A* a4 = new A;
  42.         A* a5 = static_cast<A*>(malloc(sizeof(A)));
  43.     }
  44.     cout << string(10, '-') << "6:\n";
  45.     cout << A::livingInstances << endl;
  46. }
  47.  
Success #stdin #stdout 0.01s 5280KB
comments (?)
stdin
copy 
Standard input is empty
stdout
copy 
----------1:
01
----------2:
A::A()
A::A()
A::~A()
A::~A()
----------3:
A::A()
A::A()
A::A()
A::~A()
A::~A()
A::~A()
----------4:
A::A()
A::A()
A::A()
----------5:
A::A()
----------6:
4
https://ideone.com/Lds98D
language:
C++ (gcc 8.3)
created:
11 days ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!