#include <stdio.h>
int main()
{
    int i, k;
    int a[10] = { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 };
    for (i = 0; i < 5; i++){
        k = a[i];
        a[i] = a[9-i];
        a[9 - i] = k;
    }
    for (i = 0; i < 10; i++){
        printf("%d ", a[i]);
    }
    system("pause");
    return 0;
}