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  1. #include <iostream>
  2.  
  3. class MyClass {
  4. public:
  5.     int* data;
  6.  
  7.     // Constructor
  8.     MyClass(int value) {
  9.         data = new int(value); // Dynamically allocate memory
  10.     }
  11.  
  12.     //copy constructor, deep copy
  13.     MyClass(const MyClass& other){
  14.         data = new int(*other.data);
  15.     }
  16.  
  17.     MyClass& operator=(const MyClass& other){
  18.         if(this != &other){
  19.             delete data;
  20.             data = new int(*other.data);
  21.         }
  22.  
  23.         return *this;
  24.     }
  25.  
  26.     // Destructor
  27.     ~MyClass() {
  28.         delete data; // Free the allocated memory
  29.     }
  30. };
  31.  
  32. int main() {
  33.     MyClass obj1(42);
  34.     MyClass obj2 = obj1; 
  35.     MyClass obj3(66);
  36.     obj3 = obj2;
  37.  
  38.     std::cout << "obj1 data: " << *obj1.data << std::endl;
  39.     std::cout << "obj2 data: " << *obj2.data << std::endl;
  40.     std::cout << "obj3 data: " << *obj3.data << std::endl;
  41.  
  42.     *obj2.data = 100; // Modify obj2's data
  43.  
  44.     std::cout << "After modification:" << std::endl;
  45.     std::cout << "obj1 data: " << *obj1.data << std::endl;
  46.     std::cout << "obj2 data: " << *obj2.data << std::endl;
  47.     std::cout << "obj3 data: " << *obj3.data << std::endl;
  48.  
  49.     return 0;
  50. }
Success #stdin #stdout 0.01s 5280KB
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stdin
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Standard input is empty
stdout
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obj1 data: 42
obj2 data: 42
obj3 data: 42
After modification:
obj1 data: 42
obj2 data: 100
obj3 data: 42
https://ideone.com/7tExBf
language:
C++14 (gcc 8.3)
created:
12 days ago
visibility:
public

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