whats the different between two multidimensional vector and array?
You could see it as rows and columns, as Excel is built.
It is a useful when you want to structure things for easy access.
So for the 2D vector in the code below you have 100 rows and 100 columns.
So if you write: Value
You are accessing the first row in the 10:th column.
Hope this helps to understand.
std::vector<std::vector<string> > Value(100, std::vector<string>(100));
Remember, of course, that in C++ everything is zero-based. So Value is the second row and the eleventh column.
A vector, as Jennifer84 demonstrates, is a superior construct, since you get all the benefits of an array without any of the drawbacks.
[EDIT] Oh yeah, almost forgot to answer your Q. A vector is a "container class" in the STL. Read what the C++ FAQ has to say about it here.
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