foo.cc: In function ‘int main()’:
foo.cc:13:7: warning: comparisons like ‘X<=Y<=Z’ do not have their mathematical meaning [-Wparentheses]
   13 | if (a > b >c)
      |     ~~^~~
foo.cc:17:12: warning: comparisons like ‘X<=Y<=Z’ do not have their mathematical meaning [-Wparentheses]
   17 | else if (a > c > b)
      |          ~~^~~
foo.cc:21:12: warning: comparisons like ‘X<=Y<=Z’ do not have their mathematical meaning [-Wparentheses]
   21 | else if (b >a >c)
      |          ~~^~
foo.cc:25:12: warning: comparisons like ‘X<=Y<=Z’ do not have their mathematical meaning [-Wparentheses]
   25 | else if (b > c > a)
      |          ~~^~~
foo.cc:29:12: warning: comparisons like ‘X<=Y<=Z’ do not have their mathematical meaning [-Wparentheses]
   29 | else if (c >a > b)
      |          ~~^~