foo.cc: In function 'int main()':
foo.cc:8:16: warning: right operand of comma operator has no effect [-Wunused-value]
     cin>>ps,qz,zy,qm;
                ^~
foo.cc:8:19: warning: right operand of comma operator has no effect [-Wunused-value]
     cin>>ps,qz,zy,qm;
                   ^~
foo.cc:8:21: warning: right operand of comma operator has no effect [-Wunused-value]
     cin>>ps,qz,zy,qm;
                     ^
foo.cc:9:14: warning: 'qz' is used uninitialized in this function [-Wuninitialized]
  zh=ps*0.1+qz*0.2+zy*0.2+qm*0.5;
            ~~^~~~
foo.cc:9:21: warning: 'zy' is used uninitialized in this function [-Wuninitialized]
  zh=ps*0.1+qz*0.2+zy*0.2+qm*0.5;
                   ~~^~~~
foo.cc:9:28: warning: 'qm' is used uninitialized in this function [-Wuninitialized]
  zh=ps*0.1+qz*0.2+zy*0.2+qm*0.5;
                          ~~^~~~

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