foo.cc: In function ‘int main()’:
foo.cc:20:9: warning: this ‘if’ clause does not guard... [-Wmisleading-indentation]
   20 |         if (month==4||month==6||month==9||month==11)
      |         ^~
foo.cc:22:13: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the ‘if’
   22 |             if(month==2)
      |             ^~