It is very important to clean your container before you put your stuff in. It might dirty your stuff if you do not do so. This happen to memory storage.
By declaring a variable such as objects of class is just preserved you a bulk of memory space. It doesn’t come with the memory clean up. We tends to forget to reset all to zero first before we use. Because, usually it is okay, it didn’t cause any problem.
MY_CLASS myClass for (i=0;i<Len;i++) myClass.FeedData(i,szData[i]);
You are just lucky, if it doesn’t cause any problem yet. Doing that is injecting a hidden bug to your code. I have this bad habits too and I suffered from it. And Now, I gonna put a full stop on this. It wasted me an hour to find the bug yesterday.
Clean it up, before it poison your data. A tiny dust can make you sick and it sometimes leads you to death. So reset it to all zero.
void *memset(void *s, int c, size_t n);
Just a line of code that will safe you from many hours of debugging.
MY_CLASS myClass memset(&myClass,0,sizeof(myClass)); for (i=0;i<Len;i++) myClass.FeedData(i,szData[i]);