foo.cc: In function 'int main()':
foo.cc:10:9: error: expected ',' or ';' before 'for'
   10 |         for(int i=1;i<=n;i++)
      |         ^~~
foo.cc:10:21: error: 'i' was not declared in this scope
   10 |         for(int i=1;i<=n;i++)
      |                     ^

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