Code Question

[Marcus A Martin]

I am making a subtle mistake here, but I am not sure exactly what I am doing 
wrong. I know that If I use new to allocate 
the 2D array, this works fine. Why does this not work? It compiles fine but 
segfaults upon execution. Can anyone help 
me figure out this little puzzle?

Marcus

#include <iostream.h>
 
void foo( double **mat )
{
 
   mat[0][2] = 6.0;
}
 
int main()
{
 
   double a[10][10];
   
 
   foo( (double **)a );
 
   return 0;
}