/in/foo.cc: In function 'int main()':
/in/foo.cc:12:9: warning: comparison of constant '16' with boolean expression is always true [-Wbool-compare]
  if(10<n<16)
     ~~~~^~~
/in/foo.cc:12:7: warning: comparisons like 'X<=Y<=Z' do not have their mathematical meaning [-Wparentheses]
  if(10<n<16)
     ~~^~
/in/foo.cc:17:9: warning: comparison of constant '24' with boolean expression is always true [-Wbool-compare]
  if(16<n<24)
     ~~~~^~~
/in/foo.cc:17:7: warning: comparisons like 'X<=Y<=Z' do not have their mathematical meaning [-Wparentheses]
  if(16<n<24)
     ~~^~
/in/foo.cc:22:10: warning: comparison of constant '100' with boolean expression is always true [-Wbool-compare]
  if(24<=n<100)
     ~~~~~^~~~
/in/foo.cc:22:7: warning: comparisons like 'X<=Y<=Z' do not have their mathematical meaning [-Wparentheses]
  if(24<=n<100)
     ~~^~~