#include <stdio.h>

#define ROWSIZE 4
#define COLSIZE 5

int A[ROWSIZE][COLSIZE];
int (*B)[COLSIZE];
int *C[ROWSIZE];
int **D;

int main ()
{
   int i, j;

   printf("\nArray A\n");
   printf("sizeof(*A) = %d\n",sizeof(*A));
   printf("                        j=0   j=1   j=2   j=3   j=4\n");
   printf("                    +-------------------------------+\n");
   for (i=0; i<ROWSIZE; ++i) {
      printf("A[%d] = %4d :  i=%d  |", i, (int)A[i]-(int)A, i);
      for (j=0; j<COLSIZE; ++j)
         printf("%6d", (int)(&A[i][j])-(int)A);
      printf(" |\n");
   }
   printf("                    +-------------------------------+\n");

   printf("\nArray B\n");
   B = (int (*)[COLSIZE])malloc(ROWSIZE * sizeof(int[COLSIZE]));
   printf("sizeof(*B) = %d\n",sizeof(*B));
   printf("                        j=0   j=1   j=2   j=3   j=4\n");
   printf("                    +-------------------------------+\n");
   for (i=0; i<ROWSIZE; ++i) {
      printf("B[%d] = %4d :  i=%d  |", i, (int)B[i]-(int)B, i);
      for (j=0; j<COLSIZE; ++j)
         printf("%6d", (int)(&B[i][j])-(int)B);
      printf(" |\n");
   }
   printf("                    +-------------------------------+\n");

   printf("\nArray C\n");
   for (i=0; i<ROWSIZE; ++i)
      C[i] = (int *)malloc(COLSIZE * sizeof(int));
   printf("sizeof(*C) = %d\n",sizeof(*C));
   printf("                        j=0   j=1   j=2   j=3   j=4\n");
   printf("                    +-------------------------------+\n");
   for (i=0; i<ROWSIZE; ++i) {
      printf("C[%d] = %4d :  i=%d  |", i, (int)C[i]-(int)C, i);
      for (j=0; j<COLSIZE; ++j)
         printf("%6d", (int)(&C[i][j])-(int)C);
      printf(" |\n");
   }
   printf("                    +-------------------------------+\n");

   printf("\nArray D\n");
   D = (int **)malloc(ROWSIZE * sizeof(int *));
   for (i=0; i<ROWSIZE; ++i)
      D[i] = (int *)malloc(COLSIZE * sizeof(int));
   printf("sizeof(*D) = %d\n",sizeof(*D));
   printf("                        j=0   j=1   j=2   j=3   j=4\n");
   printf("                    +-------------------------------+\n");
   for (i=0; i<ROWSIZE; ++i) {
      printf("D[%d] = %4d :  i=%d  |", i, (int)D[i]-(int)D, i);
      for (j=0; j<COLSIZE; ++j)
         printf("%6d", (int)(&D[i][j])-(int)D);
      printf(" |\n");
   }
   printf("                    +-------------------------------+\n");
}