foo.cc:8:1: error: expected ',' or ';' before 'int'
    8 | int main()
      | ^~~
foo.cc:29:6: error: variable or field 'compute' declared void
   29 | void compute(n)
      |      ^~~~~~~
foo.cc:29:14: error: 'n' was not declared in this scope
   29 | void compute(n)
      |              ^

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