/in/foo.cc: In function 'int main()':
/in/foo.cc:6:19: warning: too many arguments for format [-Wformat-extra-args]
  scanf("&d,&d",a,b);
                   ^
/in/foo.cc:6:20: warning: 'a' is used uninitialized in this function [-Wuninitialized]
  scanf("&d,&d",a,b);
                    ^
/in/foo.cc:6:20: warning: 'b' is used uninitialized in this function [-Wuninitialized]