有以下程序：
#include ＜stdio.h＞
void fun(int a，int b)
intt；
t=a；a=b；b=t；

main()
int c[10]= 1,2,3,4,5,6,7,8,9,0,i;
for (i=0; i＜10; i+=2) fun(c[i],c[i+1]);
for (i=0; i＜10; i++) printf("%d,",c[i]);
printf("\n");

程序的运行结果是( )。

A．1,2,3,4,5,6,7,8,9,0,
B．2,1,4,3,6,5,8,7,0,9,
C．0,9,8,7,6,5,4,3,2,1,
D．0,1,2,3,4,5,6,7,8,9,