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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. int * A;
  5. int * B;
  6.  
  7. void bad(int *a, int *b)
  8. {
  9. 	a = new int(1);
  10. 	b = new int(2);
  11. }
  12. void good(int *a, int *b)
  13. {
  14. 	*a = 3;
  15. 	*b = 4;
  16. }
  17. void strange(int **a, int **b)
  18. {
  19. 	*a = new int(5);
  20. 	*b = new int(6);
  21. }
  22. int main() 
  23. {
  24. 	A = new int(0);
  25. 	B = new int(0);
  26. 	cout << "before : " << *A << "," << *B << endl;
  27. 	bad(A,B);
  28. 	cout << "after bad : " << *A << "," << *B << endl;
  29. 	good(A,B);
  30. 	cout << "after good : " << *A << "," << *B << endl;
  31. 	strange(&A, &B);
  32. 	cout << "after strange : " << *A << "," << *B << endl;
  33.  
  34. 	return 0;
  35. }
Success #stdin #stdout 0s 3272KB
comments (?)
stdin
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Standard input is empty
stdout
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before : 0,0
after bad : 0,0
after good : 3,4
after strange : 5,6
https://ideone.com/YhbnBn
language:
C++14 (gcc 8.3)
created:
9 years ago
visibility:
public

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