foo.cc: In function 'int main()':
foo.cc:12:9: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
   12 |         for(int i=2;i<=n;i++)
      |         ^~~
foo.cc:15:17: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for'
   15 |                 if(i==n)
      |                 ^~
foo.cc:15:20: error: 'i' was not declared in this scope
   15 |                 if(i==n)
      |                    ^

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