#include <stdio.h>

int main(int argc, char *argv[])
{
	// create two arrays we care about
	int ages[] = { 23, 43, 12, 89, 2 };
	char *names[] = {
		"Alan", "Frank",
		"Mary", "John", "Lisa"
	};

	// safely get the size of ages
	int count = sizeof(ages) / sizeof(int);
	int i = 0;

	char **first_name = &names[0];
	char **last_name = &names[count - 1];

	printf("first_name=%p last_name=%p\n", first_name, last_name);
	printf("*first_name=%s *last_name=%s\n", *first_name, *last_name);

	printf("---\n");

	// first way using indexing
	for (i = count - 1; i > -1; i--) {
		printf("%s has %d years alive.\n", names[i], ages[i]);
	}

	printf("---\n");

	// setup the pointers to the start of the arrays
	int *cur_age = ages;
	char **cur_name = names;

	// second way using pointers
	for (i = count - 1; i > -1; i--) {
		printf("%s is %d years old.\n", *(cur_name + i), *(cur_age + i));
	}

	printf("---\n");

	// third way, pointers are just arrays
	for (i = count - 1; i > -1; i--) {
		printf("%s is %d years old again.\n", cur_name[i], cur_age[i]);
	}

	printf("---\n");

	// fourth way with pointers in a stupid complex way
	for (cur_name = names, cur_age = ages;
			(cur_age - ages) < count; cur_name++, cur_age++) {
		printf("%s lived %d years so far.\n", *cur_name, *cur_age);
	}

	return 0;
}
