程序代码：

#include <stdio.h>

int main (void) {

        int a[10]={1,2,3,4,5,6,7,8,9,10},*ptr,i=9;
        ptr=a;
        while(i>=0) {
                printf("%i ",*(ptr+i));
                i--;
        }
        printf ("\n");
        return 0;

}