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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. int x;
  5.  
  6. constexpr int foo(bool b ){
  7. 	return b ? 123 : x;	
  8. }
  9.  
  10. int bar[foo(true)]; // ok
  11.  
  12. //int baz[foo(false)]; // size of array 'baz' is not an integral constant-expression
  13. bool b;
  14. //int bbb[foo(b)]; //array bound is not an integer constant before
  15.  
  16. int main() {
  17. 	// your code goes here
  18. 	x = 42;
  19.  
  20. 	cout << foo(true) <<endl;
  21. 	cout << foo(false) <<endl;
  22.  
  23.  
  24.  
  25. 	return 0;
  26. }
Success #stdin #stdout 0s 3140KB
comments (?)
stdin 
Standard input is empty
stdout 
123
42
https://ideone.com/0A86Pc
language:
C++14 (gcc 8.3)
created:
8 years ago
visibility:
public

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