How to initialize a multi-dimensional array in a C++ constructor -

i have class contains few multi-dimensional arrays. trying initialize these arrays in constructor, having trouble figuring our how it. array of fixed size. here's have far:

class foo {   private:      int* matrix; //a 10x10 array    public:     foo();    foo:foo() {     matrix = new int[10][10]; //throws error   } 

the error is:

cannot convert `int (*)[10]' `int*' in assignment  

how can accomplish this? preferably, array default 10x10 array of 0s.

#include <memory.h> class foo {     public:         foo()         {             memset(&matrix, 100*sizeof(int), 0);         }     private:         int matrix[10][10]; }; 

that is, if you're not binding doing pointers (otherwise can pass in pointer memset, rather reference array).