/in/foo.cc: In function 'int main()':
/in/foo.cc:7:10: warning: right operand of comma operator has no effect [-Wunused-value]
  cin>>a,b;
          ^
/in/foo.cc:8:5: warning: statement has no effect [-Wunused-value]
  a-b>0; 
  ~~~^~
/in/foo.cc:9:20: warning: 'b' is used uninitialized in this function [-Wuninitialized]
  cout<<a/b<<" "<<a%b;
                    ^