#include <stdio.h>

#include "p1.h"
#include "p2.h"
#include "p3.h"
#include "p4.h"
#include "p5.h"
#include "p6.h"
#include "p7.h"
#include "p8.h"
#include "p9.h"
#include "p10.h"

void print_int_arr(int* arr, int size) {
	for (int i = 0; i < size; ++i) {
		printf(" %d", arr[i]);
	}

	putchar('\n');
}

int main(void) {
	// Problem 1
	printf("Problem 1:\n");
	double p1_arr[8] = {
		2.5, 4.3, 8.1, -7.4, 2.0, 1.0, 3.0, 4.0
	};

	double avg = 0;
	double min = 0;
	double max = 0;

	find_avg_min_max(p1_arr, 8, &avg, &min, &max);

	printf("Average: %.2lf, Min: %.2lf, Max: %.2lf\n", avg, min, max);

	// Problem 2
	printf("Problem 2:\n");
	int p2_arr[16] = { 1, 2, 3, 4, 5 };
	int size = 5;

	print_int_arr(p2_arr, size);

	size = pop_front(p2_arr, size);

	print_int_arr(p2_arr, size);

	// Problem 3
	printf("Problem 3:\n");
	double sum_of_file = sum_file("input_p3.dat");

	printf("Sum of file: %.2lf\n", sum_of_file);

	// Problem 4
	printf("Problem 4:\n");
	int p4_value = prompt_value();
	printf("You entered: %d\n", p4_value);

	// Problem 5
	printf("Problem 5:\n");

	int num_alphanum = count_alphanumeric("Hello World!!");
	printf("Number of alphanumeric characters in \"Hello World!!\": %d\n", num_alphanum);

	// Problem 6
	printf("Problem 6:\n");

	char p6_str[32] = "I have 3$, wow!";

	printf("\"%s\"\n", p6_str);
	str_to_upper(p6_str);
	printf("\"%s\"\n", p6_str);

	// Problem 7
	printf("Problem 7:\n");
	
	char p7_str[32] = "Hello Exam #2!";

	printf("\"%s\"\n", p7_str);
	reverse_string(p7_str);
	printf("\"%s\"\n", p7_str);

	// Problem 8
	printf("Problem 8:\n");

	Student students[5];

	for (int i = 0; i < 5; ++i) {
		prompt_student_info(&students[i]);
	}

	for (int i = 0; i < 5; ++i) {
		print_student(&students[i]);
	}

	double average_gpa = compute_average_gpa(students, 5);

	printf("Average GPA: %.2lf\n", average_gpa);

	// Problem 9
	printf("Problem 9:\n");

	Product products[4] = {
		{ 4011, "Banana", 10.0, 1000 },
		{ 412, "Apple", 2.5, 240 },
		{ 728, "Pear",  4.8, 180 },
		{ 119, "Orange", 1.6, 438 },
	};

	Product* found = find_product(products, 4, 728);

	if (found != NULL) {
		printf("Found product \"%s\" with id %d\n", found->name, found->id);
	} else {
		printf("Did not find any matching products!\n");
	}

	// Problem 10
	printf("Problem 10:\n");

	double vectors[3][8] = {
		{ 1, 2, 3, 4, 5, 6, 7, 8 },
		{ 0, 0, 0, 0, 0, 5, 0, 0 },
		{ 1, 1, 1, 1, 1, 1, 1, 1 },
	};

	double magnitudes[3] = { 0 };

	calculate_magnitudes(vectors, 3, magnitudes);

	for (int i = 0; i < 3; ++i) {
		printf("magnitude %d: %.2lf\n", i, magnitudes[i]);
	}

	return 0;
}