/in/foo.cc: In function 'int main()':
/in/foo.cc:6:16: warning: unused variable 'c' [-Wunused-variable]
  long long a,b,c,d,e,f,g;
                ^
/in/foo.cc:6:18: warning: unused variable 'd' [-Wunused-variable]
  long long a,b,c,d,e,f,g;
                  ^
/in/foo.cc:6:20: warning: unused variable 'e' [-Wunused-variable]
  long long a,b,c,d,e,f,g;
                    ^
/in/foo.cc:6:22: warning: unused variable 'f' [-Wunused-variable]
  long long a,b,c,d,e,f,g;
                      ^
/in/foo.cc:6:24: warning: unused variable 'g' [-Wunused-variable]
  long long a,b,c,d,e,f,g;
                        ^