#include <stdio.h> #include <stdlib.h> #include "array.h" #define INT_TO_PTR(x) ((void *) (size_t) (x)) #define PTR_TO_INT(x) ((int) (size_t) (x)) static double total_val (const Array *array, ValueFunc func) { double total = 0; size_t length = array_get_length (array); for (size_t i = 0; i < length; i++) total += func (array_get (array, i)); return total; } static double average_val (const Array *array, ValueFunc func) { return total_val (array, func) / array_get_length (array); } static double array_to_int (const void *data) { return (double) PTR_TO_INT (data); } static void print_array (Array *array) { size_t length = array_get_length (array); printf ("Array at %p is of length %zu\n", array, length); printf ("Array has capacity %zu\n", array_get_capacity (array)); double total = total_val (array, array_to_int); double average = average_val (array, array_to_int); printf ("Array total is %lf\n", total); printf ("Array average is %lf\n", average); } static Array * create_test_array (size_t start, size_t end) { Array *array = array_new (NULL); for (size_t i = start; i < end; i++) array_add (array, INT_TO_PTR (i)); return array; } int main (void) { Array *array = create_test_array (0, 100); print_array (array); return EXIT_SUCCESS; }