how to declare 2 d array using malloc
#include <stdio.h>
#include <stdlib.h>
int main()
{
int r = 3, c = 4;
int *arr = (int *)malloc(r * c * sizeof(int));
int i, j, count = 0;
for (i = 0; i < r; i++)
for (j = 0; j < c; j++)
*(arr + i*c + j) = ++count;
for (i = 0; i < r; i++)
for (j = 0; j < c; j++)
printf("%d ", *(arr + i*c + j));
/* Code for further processing and free the
dynamically allocated memory */
return 0;
}