newbie C question

[wildfrog]

Another way is to pass the double pointer as a reference:

void alloc_data(float** &data) // pass reference (to the double pointer)
{
    int i, nx, ny;

    nx = 3;
    ny = 3;

    data = (float **) calloc(nx, sizeof(float *));
    for (i=0; i<nx; i++)
        data[i] = (float *) calloc(ny, sizeof(float));
}

int main(int argc, char *argv[])
{
    float **data;
    alloc_data(data);
}

- petter