How are multi-dimensional arrays formatted in memory?

Question

In C, I know I can dynamically allocate a two-dimensional array on the heap using the following code:

int** someNumbers = malloc(arrayRows*sizeof(int*));

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Answer 1

To access a particular 2D array consider the memory map for an array declaration as shown in code below:

    0  1
a[0]0  1
a[1]2  3

To access each element, its sufficient to just pass which array you are interested in as parameters to the function. Then use offset for column to access each element individually.

int a[2][2] ={{0,1},{2,3}};

void f1(int *ptr);

void f1(int *ptr)
{
    int a=0;
    int b=0;
    a=ptr[0];
    b=ptr[1];
    printf("%d\n",a);
    printf("%d\n",b);
}

int main()
{
   f1(a[0]);
   f1(a[1]);
    return 0;
}