Data overflow and Division 0 Error

Data overflow error. You have defined a long number to store the size of a folder. When the folder is small, everything is normal. When a large folder is encountered, you know that the result is bigger than the previous value, but the result is not like this. When you set a breakpoint, you are shocked. The value is actually a value assignment, it turns out that long rows are far from enough to count the size of a folder.

 

If the divisor is zero, getlasterror () returns an untagged, massive value.

You obviously won't do silly things like a = B/0, because it's so obvious that the compiler has checked it out, but will you do a = B/(1/2) in this case, the compiler will not prompt.

It seems that we need to consider all the issues in the future.