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  1. const int A=1;
  2. const int B=2;
  3.  
  4. int main(int argc,char* argv[])
  5.   {
  6.    int x=1;
  7.    switch(x)
  8.      {
  9.       case A: ++x; break;
  10.       case B: --x; break;
  11.      }
  12.    return 0;
  13.   }
Compilation error #stdin compilation error #stdout 0s 0KB
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stdin
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Standard input is empty
compilation info 
prog.c: In function ‘main’:
prog.c:9:7: error: case label does not reduce to an integer constant
       case A: ++x; break;
       ^
prog.c:10:7: error: case label does not reduce to an integer constant
       case B: --x; break;
       ^
stdout
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Standard output is empty
https://ideone.com/33JUE5
language:
C99 (gcc 8.3)
created:
9 years ago
visibility:
public

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