C++ 2-requests Matrix Allocation Example

#include <iostream>
#include <cstdint>

#define SIZE   6

uint32_t** reserve_matrix() {
   uint32_t **m;
   m    = new uint32_t*[SIZE];
   m[0] = new uint32_t[SIZE*SIZE];
   for (uint32_t i=1; i < SIZE; i++)
      m[i] = m[i-1] + SIZE;

   return m;
}

void release_matrix(uint32_t** m) {
   delete [] m;
}

void populate_matrix(uint32_t** m) {
   for (uint32_t i=0; i < SIZE; i++)
      for (uint32_t j=0; j < SIZE; j++)
         m[i][j] = i+j;
}

void print_matrix(uint32_t** m) {
   for (uint32_t i=0; i < SIZE; i++) {
      for (int32_t j=0; j < SIZE; j++)
         std::cout << m[i][j] << " ";
      std::cout << "\n";
   }
}

int main(void) {
   uint32_t **m;

   m = reserve_matrix();
   populate_matrix(m);
   print_matrix(m);
   release_matrix(m);

   return 0;
}