#include <stdio.h>struct ord{int x,y;} dt[2]={1,2,3,4};main(){ struct ord *p=dt; printf("%d.",++p->x); printf("%d\n",++p->y);}尤其是printf("%d.",++p->x); printf("%d\n",++p->y);是什么意思啊?小弟先谢谢了!!