/in/foo.c: In function 'main':
/in/foo.c:6:6: warning: comparisons like 'X<=Y<=Z' do not have their mathematical meaning [-Wparentheses]
  if(a>=b>=c)
     ~^~~
/in/foo.c:10:11: warning: comparisons like 'X<=Y<=Z' do not have their mathematical meaning [-Wparentheses]
  else if(a>=c>=b)
          ~^~~
/in/foo.c:12:11: warning: comparisons like 'X<=Y<=Z' do not have their mathematical meaning [-Wparentheses]
  else if(b>=a>=c)    
          ~^~~
/in/foo.c:14:11: warning: comparisons like 'X<=Y<=Z' do not have their mathematical meaning [-Wparentheses]
  else if(b>=c>=a)
          ~^~~
/in/foo.c:16:11: warning: comparisons like 'X<=Y<=Z' do not have their mathematical meaning [-Wparentheses]
  else if(c>=a>=b)    
          ~^~~
/in/foo.c:18:11: warning: comparisons like 'X<=Y<=Z' do not have their mathematical meaning [-Wparentheses]
  else if(c>=b>=a)    
          ~^~~
/in/foo.c:18:7: warning: this 'if' clause does not guard... [-Wmisleading-indentation]
  else if(c>=b>=a)    
       ^~
/in/foo.c:20:6: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'if'
      return 0;
      ^~~~~~