写出程序的运行结果
include ＜stdio.h＞
main()
{ intk=6,n=0; while(k＞0)
{switch(--k)
{case1:n+=k;
case2:
case3:n+=k;
default:break;
}
k--;}
printf("%d",n);
}
输出结果为：____________