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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. enum A;
  5.  
  6. int main() {
  7. 	// your code goes here
  8. 	return 0;
  9. }
Compilation error #stdin compilation error #stdout 0s 0KB
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stdin
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Standard input is empty
compilation info 
prog.cpp:4:6: error: use of enum ‘A’ without previous declaration
 enum A;
      ^
stdout
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Standard output is empty
https://ideone.com/Zh4rI7
language:
C++14 (gcc 8.3)
created:
11 years ago
visibility:
public

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