下列程序的输出结果是( )。
void f(int *x, int *y)
int t;
t=*x,*x=*y;*y=t;
main( )
int a[8]= 1,2,3,4,5,6,7,8,i,*p,*q;
p=a;q=&a[7];
while(p<q)
f(p,q); p++; q--;
for (i=0;i<8;i+) printf("%d,",a[i]);
A) 8,2,3,4,5,6,7,1 B) 5,6,7,8,1,2,3,4
C) 1,2,3,4,5,6,7,8 D) 8,7,6,5,4,3,2,1