/in/foo.cc: In function 'int main()':
/in/foo.cc:7:5: warning: left operand of comma operator has no effect [-Wunused-value]
    a<-100000,c<100000;
    ~^~~~~~~~
/in/foo.cc:7:15: warning: right operand of comma operator has no effect [-Wunused-value]
    a<-100000,c<100000;
              ~^~~~~~~