有以下程序; 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]); 程序运行后的输出结果是( )。
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,