PRODUCT  :  C++                                    NUMBER  :  803
  VERSION  :  All
       OS  :  PC DOS
     DATE  :  October 19, 1993                       PAGE  :  1/???

    TITLE  :  Dynamically Allocated Multidimensional Arrays




  #include <stdio.h>
  #include <alloc.h>

  #define     ROW         10
  #define     COLUMN      15

  typedef int ARRAYTYPE;
  typedef ARRAYTYPE * ARRAYTYPEPTR;

  /*  Declare the 2D array as a pointer to a pointer to ARRAYTYPE
  */
     /*  Note there is no memory allocated for the array yet.
  */

  ARRAYTYPEPTR *array;

  void main()
  {
      int i, j;

      /*  First, allocate an array of pointers to ARRAYTYPE of ROW
  */
      /*  elements.  Next, looping through the array of pointers,
  */
      /*  allocate arrays of ARRAYTYPE of COLUMN elements and
  assign   */
      /*  them to the pointers.  This assigns the necessary memory
  to  */
      /*  the array, which you can then index via the [] operators.
  */

      array = (ARRAYTYPEPTR *) malloc (ROW * sizeof(ARRAYTYPEPTR));
      for (i = 0; i < ROW; i++)
          array[i] = (ARRAYTYPEPTR) malloc (COLUMN * sizeof
  (ARRAYTYPE));

      /*  Fill array with unique values  */

      for (i = 0; i < ROW; i++)
          for (j = 0; j < COLUMN; j++)
              array[i][j] = (COLUMN * i) + j;

      /*  Print out array to make sure everything's OK  */














  PRODUCT  :  C++                                    NUMBER  :  803
  VERSION  :  All
       OS  :  PC DOS
     DATE  :  October 19, 1993                       PAGE  :  2/???
    TITLE  :  Dynamically Allocated Multidimensional Arrays




      for (i = 0; i < ROW; i++)    {
          for (j = 0; j < COLUMN; j++)
              printf("%4d",array[i][j]);
          putchar('\n');
      }
  }

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