#include <stdio.h>

struct score
{
	float lab;
	float exam1;
	float exam2;
	float finalExam;
	float weightedScore;
	int letterGrade;
};
struct student
{
	char name[15];
	int ID;
	char grades[10];
	struct score grade;
};


struct student students[10] = {
{ "J. Dornan", 1539, "senior"},
{ "C. Firth", 2591, "freshman"},
{ "C. Hemsworth", 3591, "freshman"},
{ "J. Ehle", 591, "sophomore"},
{ "M. Pena", 3596, "junior"},
{ "M. Wahlberg", 1269, "freshman"},
{ "S. Johansson", 1558, "sophomore"},
{ "B. Cumberbatch", 2691, "freshman"},
{ "Z. Saldana", 5353, "freshman"},
{ "S. Bullock", 1190, "sophomore"}
};

struct score grade[10] = {
	{78, 83.5, 90.5, 80.5},
	{90, 79.0, 86.0, 75.0},
	{85, 89.5, 77.5, 82.5},
	{76, 79.5, 96.5, 76.0},
	{91, 88.5, 76.0, 83.5},
	{68, 95.5, 86.5, 95.5},
	{75, 90.5, 88.5, 80.5},
	{78, 87.5, 78.5, 90.5},
	{82, 88.0, 98.0, 80.5},
	{86, 93.5, 92.5, 74.5}
};

void weightedGrade(struct student students[], struct score grade[]);
void average(struct score grade[]);
void lowestGrade(struct score grade[]);
void highestGrade(struct score grade[]);
void letterGrade(struct score grade[]);

int main (void)
{
	int i;

 Bullock\n");

	weightedGrade(students, grade);
	average(grade);
	lowestGrade(grade);
	highestGrade(grade);
	letterGrade(grade);

	return 0;
}

void weightedGrade (struct student students[], struct score grade[])
{


	for (int i = 0; i < 10; ++i)
	{
		grade[i].weightedScore = ((grade[i].lab * .3) + (grade[i].exam1 * .2) + (grade[i].exam2 * .2) + (grade[i].finalExam * .3));

	if (grade[i].weightedScore >= 90)
		grade[i].letterGrade = 'A';
	else if ((grade[i].weightedScore >= 80) && (grade[i].weightedScore < 90))
		grade[i].letterGrade = 'B';
	else if ((grade[i].weightedScore >= 70) && (grade[i].weightedScore < 80))
		grade[i].letterGrade = 'C';
	else if ((grade[i].weightedScore >= 60) && (grade[i].weightedScore < 70))
		grade[i].letterGrade = 'D';
	else
		grade[i].letterGrade = 'F';

	printf ("%.2f\n", grade[i].weightedScore);
}
}

void average (struct score grade[])
{
	float average_lab = 0, average_exam1 = 0, average_exam2 = 0, average_finalExam = 0;

	printf ("\n=========================");
	printf ("\n The average scores are: \n --------------------- \n");

	for (int i = 0; i < 10; ++i)
	{
		average_lab += grade[i].lab;
		average_exam1 += grade[i].exam1;
		average_exam2 += grade[i].exam2;
		average_finalExam += grade[i].finalExam;
	}

	printf (" Lab score = %.2f", average_lab/10);
	printf ("\n Exam 1 score = %.2f", average_exam1/10);
	printf ("\n Exam 2 score = %.2f", average_exam2/10);
	printf ("\n Final exam score = %.2f \n", average_finalExam/10);
}

void lowestGrade (struct score grade[])
{
	float minLabScore = grade[0].lab, minExamScore1 = grade[0].exam1, minExamScore2 = grade[0].exam2, minFinalExam = grade[0].finalExam;

	printf ("\n=========================");

	printf ("\n The lowest scores are: \n ------------------------ \n");
	for (int i = 1; i < 10; ++i) {
		if (grade[i].lab < minLabScore)
			minLabScore = grade[i].lab;
		if (grade[i].exam1 < minExamScore1)
			minExamScore1 = grade[i].exam1;
		if (grade[i].exam2 < minExamScore2)
			minExamScore2 = grade[i].exam2;
		if (grade[i].finalExam < minFinalExam)
			minFinalExam = grade[i].finalExam;
	}

	printf (" Lab score = %.2f", minLabScore);
	printf ("\n Exam 1 score = %.2f", minExamScore1);
	printf ("\n Exam 2 score = %.2f", minExamScore2);
	printf ("\n Final exam score = %.2f \n", minFinalExam);
}

void highestGrade (struct score grade[])
{
	float maxLabScore = grade[0].lab, maxExamScore1 = grade[0].exam1, maxExamScore2 = grade[0].exam2, maxFinalExam = grade[0].finalExam;;

	printf ("\n=========================");
	printf ("\n The highest scores are: \n -----------------------\n");

	for (int i = 1; i < 10; ++i) {
		if (grade[i].lab > maxLabScore)
			maxLabScore = grade[i].lab;
		if (grade[i].exam1 > maxExamScore1)
			maxExamScore1 = grade[i].exam1;
		if (grade[i].exam2 > maxExamScore2)
			maxExamScore2 = grade[i].exam2;
		if (grade[i].finalExam > maxFinalExam)
			maxFinalExam = grade[i].finalExam;
	}

	printf (" Lab score = %.2f", maxLabScore);
	printf ("\n Exam 1 score = %.2f", maxExamScore1);
	printf ("\n Exam 2 score = %.2f", maxExamScore2);
	printf ("\n Final exam score = %.2f \n", maxFinalExam);
}

void letterGrade (struct score grade[])
{
	 int A = 0, B = 0, C = 0, D = 0, F = 0;

	 printf ("\n=========================");
	 printf ("\n Letter Grade Count: \n -----------------\n");

	 for (int i = 0; i < 10; ++i)
	 {
	 	switch (grade[i].letterGrade)
	 	{
	 		case 'A':
			 	++A;
	 		break;

			 case 'B':
			 	++B;
	 		break;

			 case 'C':
	 			++C;
	 		break;

			 case 'D':
	 			++D;
	 		break;

			default:
	 			++F;
	 			break;
		}
}
	 printf (" A's = %i", A);
	 printf ("\n B's = %i", B);
	 printf ("\n C's = %i", C);
	 printf ("\n D's = %i", D);
	 printf ("\n F's = %i", F);
}