/in/foo.cc: In function 'int main()':
/in/foo.cc:7:9: warning: comparison of constant '2' with boolean expression is always true [-Wbool-compare]
  if(-2<a<2&&-2<a<2)
     ~~~~^~
/in/foo.cc:7:7: warning: comparisons like 'X<=Y<=Z' do not have their mathematical meaning [-Wparentheses]
  if(-2<a<2&&-2<a<2)
     ~~^~
/in/foo.cc:7:17: warning: comparison of constant '2' with boolean expression is always true [-Wbool-compare]
  if(-2<a<2&&-2<a<2)
             ~~~~^~
/in/foo.cc:7:15: warning: comparisons like 'X<=Y<=Z' do not have their mathematical meaning [-Wparentheses]
  if(-2<a<2&&-2<a<2)
             ~~^~