README.md

3.70

A.

filed	offsets
e1.p	0
e1.y	8
e2.x	0
e2.next	8

B. 16.

C.

void proc (union ele *up) {
    up->e2.x = *(*(up->e2.next).e1.p) - (*(up->e2.next).e1.y);
}