foo.cc:32:3: error: expected unqualified-id before '/' token
   32 |  */
      |   ^
foo.cc:35:5: error: redefinition of 'int main(int, const char**)'
   35 | int main(int argc, const char * argv[]) {
      |     ^~~~
foo.cc:3:6: note: 'int main(int, const char**)' previously defined here
    3 |  int main(int argc, const char * argv[]) {
      |      ^~~~

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