Those who suffer from headache will find they get ________ from this medicine.[ ]

A. relief  

B. safety

C. defense  

D. shelter

下列程序的输出结果是______。
#include ＜stdio.h＞
void swap(int *a, int *B)

int *t;
t=a;a=b;b=t;

main()

int i=3,j=5,*p=&i,*q=&j;
swap(p,q);printf("%d %d\n",*p,*q);