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 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,