/in/foo.cc: In function 'int main()':
/in/foo.cc:6:16: warning: comparison of constant '99' with boolean expression is always true [-Wbool-compare]
    6 |         if(10<a<99)
      |            ~~~~^~~
/in/foo.cc:6:14: warning: comparisons like 'X<=Y<=Z' do not have their mathematical meaning [-Wparentheses]
    6 |         if(10<a<99)
      |            ~~^~