foo.cc: In function 'int main()':
foo.cc:14:6: warning: this 'else' clause does not guard... [-Wmisleading-indentation]
   14 |      else
      |      ^~~~
foo.cc:16:3: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'else'
   16 |   i++;
      |   ^
foo.cc: At global scope:
foo.cc:20:2: error: expected unqualified-id before numeric constant
   20 | }2
      |  ^

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