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  1. #include<iostream>
  2.  
  3. class myClass
  4. {
  5. private:
  6.   int val;
  7. public:
  8.     myClass () = delete;
  9.     myClass (int val):val
  10.   {
  11.   val}
  12.   {
  13.   }
  14.   int get () const
  15.   {
  16.     return val;
  17.   }
  18. };
  19.  
  20. bool
  21. ifEqualMake (int a, int b, myClass * obj)
  22. {
  23.   if (a == b)
  24.     {
  25.       obj = new myClass (a);
  26.  
  27.     }
  28.   else
  29.     {
  30.       std::cout << "Difference exists: " << a - b << '\n';
  31.       // Uncommenting the below line makes the whole thing work!
  32.       obj = new myClass (a + b);
  33.     }
  34.   std::cout << " Object made with value :" << obj->get () << '\n';
  35.   return (a == b);
  36. }
  37.  
  38. int
  39. main ()
  40. {
  41.   myClass *obj1 = nullptr;
  42.   myClass *obj2 = nullptr;
  43.   myClass *obj3 = nullptr;
  44.  
  45.  
  46.   ifEqualMake (3, 3, obj1);
  47.   ifEqualMake (4, 3, obj2);
  48.   ifEqualMake (4, 4, obj3);
  49.  
  50.   if(obj1) std::cout << "obj 1 made in heap: " << obj1->get () << '\n';
  51.  
  52.   // I would expect ONLY this to be error
  53.   // std::cout<<"obj 2 made in heap: "<<obj2->get()<<'\n';
  54.   //
  55.   if(obj3) std::cout << "obj 3 made in heap: " << obj3->get () << '\n';
  56.  
  57.   delete obj1;
  58.   delete obj3;
  59.  
  60.   return 0;
  61.  
  62. }
  63.  
Success #stdin #stdout 0s 4356KB
comments (?)
stdin
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Standard input is empty
stdout
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 Object made with value :3
Difference exists: 1
 Object made with value :7
 Object made with value :4
https://ideone.com/DDvo9y
language:
C++14 (clang 8.0)
created:
4 years ago
visibility:
public

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