/in/foo.cc: In function 'int main()':
/in/foo.cc:6:12: warning: comparison of constant '9999' with boolean expression is always true [-Wbool-compare]
  if((-999<a<9999)&&(-999<b<9999)&&(-999<c<9999)){
      ~~~~~~^~~~~
/in/foo.cc:6:10: warning: comparisons like 'X<=Y<=Z' do not have their mathematical meaning [-Wparentheses]
  if((-999<a<9999)&&(-999<b<9999)&&(-999<c<9999)){
      ~~~~^~
/in/foo.cc:6:27: warning: comparison of constant '9999' with boolean expression is always true [-Wbool-compare]
  if((-999<a<9999)&&(-999<b<9999)&&(-999<c<9999)){
                     ~~~~~~^~~~~
/in/foo.cc:6:25: warning: comparisons like 'X<=Y<=Z' do not have their mathematical meaning [-Wparentheses]
  if((-999<a<9999)&&(-999<b<9999)&&(-999<c<9999)){
                     ~~~~^~
/in/foo.cc:6:42: warning: comparison of constant '9999' with boolean expression is always true [-Wbool-compare]
  if((-999<a<9999)&&(-999<b<9999)&&(-999<c<9999)){
                                    ~~~~~~^~~~~
/in/foo.cc:6:40: warning: comparisons like 'X<=Y<=Z' do not have their mathematical meaning [-Wparentheses]
  if((-999<a<9999)&&(-999<b<9999)&&(-999<c<9999)){
                                    ~~~~^~