50210. Find the Indices

#include <stdio.h>
#include <stdlib.h>
#include "findRowAndColumn.h"

void findRowAndColumn(int **ptr, int *Row, int *Col, int **start, int *ansRow, int *ansCol){
    for(int i = 0; ptr[i] != NULL; i++){
        int *p = ptr[i], *st = start[i];
        int r = Row[i], c = Col[i];

        int d = p - st;
        ansRow[i] = d / c;
        ansCol[i] = d % c;
    }
}