Help printing a multi array

I am having difficulty trying to use a pointer to print contents of an array. With the simple array below how could I use a pointer to print out the contents? I know I can use multi[x][x] but I would like to use a pointer instead. Is this where I need to learn casting? I am just printing different variables so I can learn how this works. Any help using a pointer of some type to print the contents of my array is greatly appreciated. One row at a time would be nice.

Code:

---

  int multi[3][4] = {{1,2,3,4},{5,6,7,8},{9,10,11,12}};
   
  int (*ptr)[4], count;
 
  ptr = multi;
 

  printf("%d\n", ptr);
  printf("%d\n", *ptr);
  printf("%d\n", multi);
  printf("%d\n", multi[0]);
  printf("%d\n", multi[0][0]);

    ++ptr;
 
  printf("%d\n", ptr);
  printf("%d\n", *ptr);
  printf("%d\n", multi);
  printf("%d\n", multi[0]);
  printf("%d\n", multi[0][0]);
  printf("%u\n", sizeof(multi[0]));
  printf("%d\n", sizeof(multi[0][0]));

---

Here's one way.

Code:

---

#include <stdio.h>

#define ROWS 3
#define COLS 4
 
int main() {

        int multi[ROWS][COLS] = {{1,2,3,4},{5,6,7,8},{9,10,11,12}};
   
        int * ptr1 ;
       
        ptr1 = &multi[0][0];
        int i , j ;
       
        for (i = 0  ; i < ROWS  ; i++ ) {
                for (j = 0  ; j < COLS  ; j++ ) {
                        printf("The value @ [&#37;d][%d] is %d\n", i,j,*ptr1 ) ;
                        ptr1++ ;
                }
        }
        return 0 ;
}

---

I am trying to learn how to use pointer in this fashion...int (*ptr)[4]. Is that not neccessary? The book I am reading uses the pointer that way but then does this... p= (int *)ptr; in a function and when I do it I get a compile error... Operation between types "int(*)[4]" and "int*" is not allowed. Could you give me an example doing it this other way? Thanks always for your help.

No I can't - haven't done that yet.

> I know I can use multi[x][x]
Try ptr[x][x] as well

(*ptr)[x]
would print the first row, x = 0 to 3

*ptr being the equivalent of ptr[0]