Consider (as usual in 64-bit machines) that values of type double are represented using 8 bytes in memory and struct types data1 and data2

defined as follows.

struct data1 {
  double x;
  double y;
};
struct data2 {
  data1 a;
  data1 b;
  data1 c; 
};

Assuming that no padding bytes are necessary in the representation of data1 and data2

what is the output of

cout << sizeof(data1) << ' ' << sizeof(data2);