1.
void main（）
{
char *pt1 = {"woshi"};
char *pt2;
pt2 = (char *)malloc(sizeof(pt2));
test(pt1);
test(pt2);
printf("pt1 is =%s\n",pt1);
printf("pt2 is =%s\n",pt2);
}

test(char *point)
{
char *q = {"haoren"};
point = q;
}

结果是pt1 = woshi没有被改变，
pt2 = haoren被赋值了.

不都是传的首地址的值吗,为什么一个被改变了，一个没有被改变呢.
求教.