/in/foo.cc: In function 'int main()':
/in/foo.cc:6:10: warning: right operand of comma operator has no effect [-Wunused-value]
 cin>>a,b,c,d,e;
          ^
/in/foo.cc:6:12: warning: right operand of comma operator has no effect [-Wunused-value]
 cin>>a,b,c,d,e;
            ^
/in/foo.cc:6:14: warning: right operand of comma operator has no effect [-Wunused-value]
 cin>>a,b,c,d,e;
              ^
/in/foo.cc:6:15: warning: right operand of comma operator has no effect [-Wunused-value]
 cin>>a,b,c,d,e;
               ^