how to pass 2 dimensional array if both dimensions are unknown at compile time

Question

what is this the correct way to pass 2 dimensional array of unknown size?

reprVectorsTree::reprVectorsTree(float tree[][], int noOfVectors, int dimensions)
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Answer 1

First idea was to use vectors. But if you are working with a C code, pass it as a reprVectorsTree(float** tree, int noOfVectors, int dimensions).

For your case:

float tree[15][2] = {{2,1},{2,1},{2,1},{2,1},{2,1},{2,1},{2,1},{2,1},{2,1},{2,1},{2,1},{2,1},{2,1},{2,1},{2,1}};

int nRows = 15;
int nCols = 2;

float** arr = new float*[nRows];

for (int i = 0; i < nRows; ++i) {
     arr[i] = new float[nCols];
}

for (int i = 0; i < nRows; ++i) {
    for (int j = 0; j < nCols; ++j) {
        arr[i][j] = tree[i][j];
    }
}

reprVectorsTree *r1 = new reprVectorsTree(arr, nRows, nCols);