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  1. #include <iostream>
  2.  
  3. using std::cout;
  4. using std::endl;
  5.  
  6. class A {
  7. public:
  8.   int i;
  9.   A(int i_) : i(i_) {
  10.     cout << "A(): " << i << endl;
  11.   }
  12.   A(const A& a_) : i(a_.i) {
  13.   	cout << "A(const A&): " << i << endl;
  14.   }
  15.   ~A() {
  16.     cout << "~A(): " << i << endl;
  17.   }
  18. };
  19.  
  20. class B {
  21. public:
  22.   A a;
  23.   int b;
  24.   B(const A& a_) : a(a_) {
  25.     cout << "B(): " << a.i << endl;
  26.   }
  27.   ~B() {
  28.     cout << "~B(): " << a.i << endl;
  29.   }
  30. };
  31.  
  32. int main(void) {
  33.   for(int c = 0; c < 3; ++c) {
  34.     A a(c+1);
  35.     B b(a);
  36.     cout << b.a.i << endl;
  37.   }
  38.   return 0;
  39. }
Success #stdin #stdout 0s 15240KB
comments (?)
stdin 
Standard input is empty
stdout 
A(): 1
A(const A&): 1
B(): 1
1
~B(): 1
~A(): 1
~A(): 1
A(): 2
A(const A&): 2
B(): 2
2
~B(): 2
~A(): 2
~A(): 2
A(): 3
A(const A&): 3
B(): 3
3
~B(): 3
~A(): 3
~A(): 3
https://ideone.com/XGxuQI
language:
C++14 (gcc 8.3)
created:
7 years ago
visibility:
public

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