STL question: vector size (2 dimension)

I have a

vector < vector<int> > TwoDim;


What does TwoDim.size() give me? Is it (x*y), assuming x = rows, y = columns in the sense of an array?

How do I get the size of x?
How do I get the size of y?


Thanks,
codeguy

It gives the number of vector<int> in your vector (aka, the size of x).
vector[n].size() gives the size of your y size.

Quote:

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Originally Posted by Elysia

It gives the number of vector<int> in your vector (aka, the size of x).
vector[n].size() gives the size of your y size.

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And it's worth noting that vector[0].size() may well be a completely different number than vector[1].size() for example.

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Mats

Which is why Boost.MultiArray is a better choice for most applications than jagged vectors.