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CheeseMonger

Arrays and vectors.

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I''m very new to the standard template library and was wondering how to implement the following as a vector: int nVertices; fscanf(hFileHandle, "%i ", &nVertices); float fVertexArray[nVertices][3]; I know I can''t do this arrays as I have found out, and I know that a vector would do the job, but don''t know how to implement one let alone a 2D one. Any help would be gratefully received. Cheers, - CheeseMonger

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int nVertices;
fscanf(hFileHandle, "%i ", &nVertices);
float fVertexArray[nVertices][3];


bool resize_3(const std::vector<float> & v)
{
v.resize(3);
return true;
}
int main()
{
...
 
int nVertices;
fin >> nVertices; // fin is an ifstream object that has opened the specified file
vector< vector<float> > fVertexArray;
fVertexArray.resize(nVertices);
for_each(fVertexArray.begin(), fVertexArray.end(), resize_3);
 
...
return 0;
}


quote:
I know I can''t do this arrays...

You can do it as dynamic arrays. You can also create a vertex structure and use a vector/dynamic array of those.

As I like to say, if you''re using C++, use C++.

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