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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. struct X;
  5.  
  6. struct Y {
  7.     void f(X* a);
  8. };
  9.  
  10. struct X {
  11. private:
  12.     int i;
  13. public:
  14.     friend void Y::f(X* a);
  15. };
  16.  
  17. void Y::f(X* x) {
  18.     x->i = 0; // Error: member "X::i" (declared at line 9) is inaccessible
  19. }
  20.  
  21. int main() {
  22. 	// your code goes here
  23. 	return 0;
  24. }
Success #stdin #stdout 0s 15240KB
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stdout 
Standard output is empty
https://ideone.com/goHLoC
language:
C++14 (gcc 8.3)
created:
8 years ago
visibility:
public

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