foo.cc: In function 'int main()':
foo.cc:8:23: warning: statement has no effect [-Wunused-value]
    8 |               case 2: 29;
      |                       ^~
foo.cc:29:21: warning: statement has no effect [-Wunused-value]
   29 |             case 2: 28;
      |                     ^~

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