2D Arrays

Question

Why do we have to write columns of an array to a function parameter? If we pass columns why do we not pass rows of the array to the function? And what happens when I pass an array as a parameter to a function? Do the function take a copy of the array or ..?

Answer 1

It does not make a copy of the array, it makes a copy of the address of the array
To pass arrays (let's say of int), you can do like that :
void foo(int ** matrix, size_t rows, size_t columns);
PS : size_t is equivalent to unsigned long