/in/foo.cc: In function 'int main()':
/in/foo.cc:6:9: warning: comparisons like 'X<=Y<=Z' do not have their mathematical meaning [-Wparentheses]
     if(a<b<c){
        ~^~
/in/foo.cc:11:9: warning: comparisons like 'X<=Y<=Z' do not have their mathematical meaning [-Wparentheses]
     if(b<a<c){
        ~^~
/in/foo.cc:17:6: warning: comparisons like 'X<=Y<=Z' do not have their mathematical meaning [-Wparentheses]
  if(c<a<b){
     ~^~
/in/foo.cc:22:6: warning: comparisons like 'X<=Y<=Z' do not have their mathematical meaning [-Wparentheses]
  if(a<c<b){
     ~^~
/in/foo.cc:27:28: warning: 'zd' may be used uninitialized in this function [-Wmaybe-uninitialized]
  cout<<zx<<" "<<zj<<" "<<zd; 
                            ^
/in/foo.cc:27:21: warning: 'zj' may be used uninitialized in this function [-Wmaybe-uninitialized]
  cout<<zx<<" "<<zj<<" "<<zd; 
                     ^~~
/in/foo.cc:27:12: warning: 'zx' may be used uninitialized in this function [-Wmaybe-uninitialized]
  cout<<zx<<" "<<zj<<" "<<zd; 
            ^~~