若有以下程序：# include ＜iostream＞using namespace std;void sub(int x, int y, int *z){ *z = y+x;}int main (){ int a,b, c; sub[8,4.&a) ; sub (6, a, &b) ; sub (a.b, &c) ; cout＜＜a＜＜" , "＜＜b＜＜", "＜＜c＜＜end1; return 0;} 程序运行后的输出结果是
A．12,18,30