Implementation of C and C++ dynamic allocation of two dimensional array

C:

The functions malloc and free are used in C.

// Dynamic allocation M*N d 
int **a=(int **)malloc(sizeof(int*)*M);
for(int i=0;i<M;i++)
  a[i]=(int *)malloc(sizeof(int)*N);
// The dynamic release 
for(int j=0;j<M;j++)
  free(a[i]);
free[a];

C + + :

C++ USES the keywords new and delete.

// Dynamic allocation M*N d 
int **a=new int *[M];
for(int i=0;i<M;i++)
  a[i]=new int[N];
// The dynamic release 
for(int j=0;j<M;j++)
  delete[] a[i];
delete[] a;