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  1. #include <iostream>
  2.  
  3. // foo.h
  4. namespace foo
  5. {
  6.     extern int bar;
  7. }
  8.  
  9. //foo.cpp
  10. namespace foo
  11. {
  12.     int bar = 42;
  13. }
  14.  
  15. int setBar(int x)
  16. {
  17. 	std::cout << "old foo::bar: " << foo::bar << std::endl;
  18.     foo::bar = x;
  19.     std::cout << "new foo::bar: " << foo::bar << std::endl;
  20. }
  21.  
  22. int main()
  23. {
  24. 	setBar(999);
  25. }
  26.  
Success #stdin #stdout 0s 15240KB
comments (?)
stdin 
Standard input is empty
stdout 
old foo::bar: 42
new foo::bar: 999
https://ideone.com/3OWhBk
language:
C++ (gcc 8.3)
created:
8 years ago
visibility:
public

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