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  1. #include <iostream>
  2.  
  3.  
  4. int main()
  5. {
  6. 	constexpr int i = 42;
  7. 	int j = 43;
  8.  
  9. 	constexpr int k { j };
  10. }
  11.  
Compilation error #stdin compilation error #stdout 0s 0KB
comments (?)
stdin 
Standard input is empty
compilation info 
prog.cpp: In function ‘int main()’:
prog.cpp:9:22: error: the value of ‘j’ is not usable in a constant expression
  constexpr int k { j };
                      ^
prog.cpp:7:6: note: ‘int j’ is not const
  int j = 43;
      ^
stdout 
Standard output is empty
https://ideone.com/EzVPZD
language:
C++14 (gcc 8.3)
created:
14 hours ago
visibility:
secret

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