#include <iostream>
using namespace std;

//5a
//6.4 Exercises
//int main()
//{
//    int a = 0;
//    cout << a++ << endl;
//    cout << ++a << endl;
//    cout << a + 1 << endl;
//    cout << a << endl;
//    cout << --a << endl;
//}

//5a
//7.2 Exercises
//int main()
//{
//	int money = 0;
//	int accounts = 0;
//
//	cout << "What is your balance?" << endl;
//	cin >> money;
//	cout << "How many accounts do you have open with us?" << endl;
//	cin >> accounts;
//
//	if (money >= 25000)
//		cout << "Your membership is Platinum";
//	else if (money < 25000 && money > 10000 && accounts == 2)
//		cout << "Your membership is Gold";
//	else if (money > 10000 && accounts == 1)
//		cout << "Your membership is Silver";
//	else if (money <= 10000)
//		cout << "Your membership is Copper";
//
//	return 0;
//}

//5b
//7.4 Exercises
//int main()
//{
//	char menu_selection;
//	cout << "Student Grade Program" << endl;
//	cout << "- Main Menu -" << endl << endl;
//	cout << "1. Enter name\n2. Enter test scores\n3. Display test scores\n9. Exit"
//		 << endl << endl;
//	cout << "Please enter your choice from the list above ";
//
//	cin >> menu_selection;
//
//	switch (menu_selection)
//	{
//	case '1':
//		cout << "Enter name";
//		break;
//	case '2':
//		cout << "Enter test scores";
//		break;
//	case '3':
//		cout << "Display test scores";
//		break;
//	case '9':
//		cout << "Exit";
//		break;
//	}
//}


//5c
//7.10 Exercises #2
//int main()
//{
	//variables
//	int amountOfLoan = 0;
//	float interestRate = 0;
//	int fee = 0;

	//defining variables w/ input sequence
//	cout << "Enter the amount of your loan" << endl;
//	cin >> amountOfLoan;
//	cout << endl;
//	cout << "Enter the interest rate" << endl;
//	cin >> interestRate;
//	cout << endl;

	//checking if inputs are valid
//	if (interestRate > 18 || interestRate < 1)
//	{
//		cout << "Error: invalid interest rate" << endl;
//		return 0;
//	}
//	if (amountOfLoan > 1000 || amountOfLoan < 100)
//	{
//		cout << "Error: invalid loan amount" << endl;
//		return 0;
//	}

	//calculating fees
//	if (amountOfLoan <= 500 || amountOfLoan >= 100)
		//fee = 20;
		//	if (amountOfLoan > 500)
		//fee = 25;

	//outputting data
//	cout << "The total amount of interest due is ";
//	cout << amountOfLoan * interestRate << endl;

//	cout << "The interest rate is ";
//	cout << interestRate << endl;

//	cout << "The total amount of interest and fees due is ";
//	cout << (amountOfLoan * interestRate) + fee << endl;
	
//	return 0;
//	}

//6b
//Section 8.4
//#1
int main()
{
//defining variables
	int numOfAssignments = 0;  int gradedAssignments = 0; float score;  float scoreAccumulate = 0; float averageScore; int numCount = 1;
//user prompt and input
	cout << "Enter the number of assignments" << endl;
	cin >> numOfAssignments;
	gradedAssignments = numOfAssignments;
	cout << endl;
//get each assignment score
	for (numOfAssignments; numOfAssignments > 0; numOfAssignments--)
	{
		cout << "Enter the score for Assignment #" << numCount << endl;
		cin >> score;
		scoreAccumulate = scoreAccumulate + score;
		numCount++;
	}
//calculate average score
	averageScore = (scoreAccumulate / gradedAssignments);
//print average score
	cout << "The average score of these " << gradedAssignments << " assignments is " << averageScore;
}

// Section 8.4
// #2

//int main()
//{
	//defining variables
	//int baseLength = 0;

	//asking for input
	//cout << "Base length?" << endl;
	//cin >> baseLength;
	//cout << endl;

	//executing loops to create triangle
	//for (int b = baseLength; b <= baseLength, b != 0; b--)
	//{
		//for (int a = b; a != 0; a--)
		//{
			//cout << '*';
		//}
		//cout << endl;
	//}

	//return 0;
//}

//Section 8.10 #3

//int main()
//{
//	int endValue = 0; int currentValue = 1; int behind_currentValue = 0; int currentBehindSum = 1;
	
//	cout << "Where would you like your Fibonacci sequence to terminate?\n";
//	cin >> endValue;
//	cout << endl;

//	while (currentValue <= endValue)
//	{
//		cout << currentBehindSum << ' ';
//		currentBehindSum = currentValue + behind_currentValue;
		
//		behind_currentValue = currentValue;
//		currentValue = currentBehindSum;

//	}

//	cout << endl;
//	return 0;
//}

//6a
//Section 8.2 # 1

//int main()
//{
//	//defining variables
//	int startValue = 0;
	//user prompt
//	cout << "Welcome to the descending even number program.\nPlease enter an integer between 1 and 50\n";
//	cin >> startValue;
//	cout << endl;
//	//end program if startValue not 1-50
//	if ((startValue < 50) && (startValue > 1))
//	{
//	}
//	else
//	{
//		cout << "The number you have entered is not between 1 and 50. Try again." << endl;
//		return 0;
//	}
//	//check if startValue is odd, print once if odd skip if even
//	if ((startValue % 2) != 0)
//	{
//		cout << startValue;
//		cout << endl;
//	}
//	//calculations and display loop
//	for (startValue; (startValue >= 0); startValue--)
//	{
//		if ((startValue % 2) == 0)
//		{
//			cout << startValue << ' ';
//		}
//		else
//		{
//		}
//	}

//	cout << endl;
//	return 0;

//}

//Section 8.3 #1

//int main()
//{
//defining variables
//int startValue = 0;
//user prompt and check if number is 1-50
//cout << "Welcome to the descending even number program.\nPlease enter an integer between 1 and 50\n";
//cin >> startValue;
//cout << endl;
//if ((startValue > 50) || (startValue < 1))
//{
//	do
//	{
//		cout << "You have not entered an integer between 1 and 50. Please try again.\n";
//		cin >> startValue;
//		cout << endl;
//	} while ((startValue > 50) || (startValue < 1));
//}
//check if startValue is odd, print once if odd skip if even
//if ((startValue % 2) != 0)
//{
//	cout << startValue;
//	cout << endl;
//}
//calculations and display loop
//for (startValue; (startValue >= 0); startValue--)
//{
//	if ((startValue % 2) == 0)
//	{
//		cout << startValue << ' ';
//	}
//	else
//	{
//	}
//}

//cout << endl;
//return 0;

//}