请教大家一个菜鸟问题

jiantiger

请问一下(RECORD *) &rr 这个表达式与(RECORD *)rr 有什么区别呢？分别表示什么意思？ 请大家帮助我

modemer

Why dear master doesn't sweep this post out, let me got the chance to help him? hehe

you are really suck boy , this is a very basic concept of C, I suggest you to read C books.

But any way I like to bounce this time.

(RECORD *)&rr means that you cast rr to be able to store a RECORD object.

(RECORD *)rr means that you cast rr to be a pointer of RECORD type.

if you have the following:
    struct RR {
       RECORD record;
       int test;
       } rr, *rr1;
    RECORD *pRec;
then you can use as following even though rr is primarily used for struct RR:
    pRec = (RECORD*)&
    rr1 = &
    pRec = (RECORD*)rr1;

I bet you still can't understand what I said