C qsort() with dynamic n by 2 multi-dimensional array

Question

First, I defined a dynamic array with 2 columns and 10 row. The integer number is set to 10 here just for example.

int** array;
int number = 10;         


        

Answer 1

sizeof array[0] will be "2 * sizeof(int)", for this static array.

int array[10][2];

sizeof array[0] will be "sizeof(int*)", for this pointer-to-pointer. sizeof array[0][0] will be "sizeof(int)", for this pointer-to-pointer.

int **array;

So, First thing is you cannot use "qsort( array, number, sizeof array[0], compare );" in case of pointer-to-pointer implementation.