//Code by Jordan Harris-Toovy for OIT's CST116 course lab 3. October 2021

#include <iostream>
#include <iomanip>
using namespace std;

//7.2 - Learn by doing exercises #1

/*
int main()
{
    float money = 0.0F;
    bool has_checkings = 0;
    bool has_savings = 0;

    cout << "Please enter the amout of money you have (in USD): \n";
    cin >> money;

    cout << "Do you have a checkings account (enter 0 for no, 1 for yes): \n";
    cin >> has_checkings;

    cout << "Do you have a savings account (enter 0 for no, 1 for yes): \n";
    cin >> has_savings;

    cout << "\n\n";
    cout << "Your account type is: ";

    if (money >= 25000)
        cout << "Platnum" << endl;
    else if (money >= 10000)
    {
        if (has_checkings == 1 && has_savings == 1)
            cout << "Gold" << endl;
        else if ((has_checkings == 1 && has_savings == 0) || (has_checkings == 0 && has_savings == 1))
            cout << "Silver" << endl;
        else
        {
            cout << "Error" << endl;
            return 1;
        }
    }
    else
        cout << "Copper" << endl;

    return 0;
}
*/

//7.4 - Learn by doing exercises #1

/*
int main()
{
    cout << "Student Grade Program\n" << "     -Main Menu-" << "\n\n";
    cout << "1. Enter name\n";
    cout << "2. Enter test scores\n";
    cout << "3. Display test scores\n";
    cout << "9. Exit\n\n";
    cout << "Please enter your choice from the list above: ";

    int user_input = 0;
    cin >> user_input;

    cout << "\n";

    switch (user_input)
    {
    case 1:
        cout << "This is where you would enter a name if this was more then a menu!\n";
        break;
    case 2:
        cout << "This is where you would enter a test score if this was more then a menu!\n";
        break;
    case 3:
        cout << "This is where you would see test scores if this was more then a menu!\n";
        break;
    case 9:
        cout << "Goodbye\n";
        break;
    default:
        cout << "Invalid input. Exiting\n";
        return 1;
    }

    return 0;
}
*/

//7.10 - Programing exercises #2

//Pesudocode:
/*
DISPLAY promt for interest rate
GET interest rate from user

DISPLAY promt for loan amount
GET loan amount from user

IF interest rate is out of range
DISPLAY error message

IF loan amount is out of range
DISPLAY error message

IF loan amount is greater than the threshold
MOVE high fee into varible charge
OTHERWISE
MOVE low fee into varible charge

Calculate the interest of the loan amount and add it to varible charge

DISPLAY charge
*/

/*
int main()
{
    float interest_rate = -1.00F;
    float principal = -1.00F;
    float fee = 0.00F;
    float payment = -1.00F;

    cout << "Enter the interest rate (in percent) of the loan: ";
    cin >> interest_rate;

    cout << "\nEnter the principal (in USD) of the loan: ";
    cin >> principal;
    cout << endl;

    if (interest_rate > 18)
    {
        cout << "Interest rate is too high\n";
        return (1);
    }
    else if (interest_rate < 1)
    {
        cout << "Interest rate is too low\n";
        return (2);
    }

    if (principal > 1000.00F)
    {
        cout << "Principal is too large\n";
        return (3);
    }
    else if (principal < 100.00F)
    {
        cout << "Principal is too small\n";
        return (4);
    }

    if (principal > 500.00F)
        fee = 25.00F;
    else
        fee = 20.00F;

    payment = principal * (interest_rate / 100);
    payment += fee;

    cout << "\n\nThe payment due for this billing cycle is ";
    cout.setf(ios::fixed);
    cout.setf(ios::showpoint);
    cout.precision(2);
    cout << payment << " USD\n";

    return (0);
}
*/

//8.2 - Learn by doing exercises #1

/*
int main()
{
    int max_value = -1;

    cout << "Enter an interger between 1 and 50: ";
    cin >> max_value;
    
    //Filter invalid input
    if ((max_value < 1) || (max_value > 50))
    {
        cout << "\n Invalid input";
        return (1);
    }

    cout << "The even numbers between " << max_value << " and 0 (inclusive) are: " << endl;

    //Check if even, remove 1 if not
    if ((max_value % 2) != 0)
    {
        max_value--;
    }

    while (max_value >= 0)
    {
        cout << max_value << endl;
        max_value -= 2;
    }

    return (0);
}
*/

//8.3 - Learn by doing exercises #1

/*
int main()
{
    int max_value = -1;

    while ((max_value < 1) || (max_value > 50))
    {
        cout << "Enter an interger between 1 and 50: ";
        cin >> max_value;

        //Alert user of invalid input
        if ((max_value < 1) || (max_value > 50))
        {
            cout << "\n Invalid input\n";
        }
    }

    cout << "The even numbers between " << max_value << " and 0 (inclusive) are: " << endl;

    //Check if even, remove 1 if not
    if ((max_value % 2) != 0)
    {
        max_value--;
    }

    do
    {
        cout << max_value << endl;
        max_value -= 2;
    }
    while (max_value >= 0);

    return (0);
}
*/

//8.4 - Learn by doing exercises #1

//Pseudocode:
/*
* DISPLAY loop-length prompt
* GET num_asign
* 
* FOR num_asign: 
*   DISPLAY score prompt
*   GET num_asign, ADD to scores
* 
* DIVIDE scores by num_asign
* DISPLAY scores
*/

/*
int main()
{
    unsigned int num_asign = 0;
    float score = 0.0F, temp_score = 0.0F;

    cout << "Enter the number of asignments: ";
    cin >> num_asign;
    cout << "\nEnter each score as a percent.\n\n";

    for (int idx = 0; idx < num_asign; idx++)
    {
        cout << "Enter score " << idx + 1 << " : ";
        cin >> temp_score;
        score += temp_score;
        cout << endl;
    }

    score = score / num_asign;

    cout << "The average score is: " << score << endl;

    return (0);
}
*/

//8.4 - Learn by doing exercises #2 (NOT IN PROBLEM SET)

/*
int main()
{
    int tri_height = 0;
    cout << "Enter size of triangle: ";
    cin >> tri_height;
    cout << endl;

    if (tri_height > 0)
    {
        tri_height--;
    }
    else
    {
        cout << "Invalid size";
        return (1);
    }

    for (tri_height; tri_height >= 0; tri_height--)
    {
        for (int tri_width = tri_height; tri_width >= 0; tri_width--)
            cout << "* ";
        cout << endl;
    }
    return (0);
}
*/

//8.10 - Programing exercises #3

//Pseudocode:
/*
* DISPLAY user prompt for maximum sequence value
* GET max_value
* 
* IF max_value < 1, end
* ELSE IF max_value = 1, DISPLAY 1, 1
* ELSE:
* 
* DISPLAY 1, 1, 2
* working_v1 = 1
* working_v2 = 2
* working_v3 = 2
* 
* WHILE working_v3 < max_value:
* 
* working_v3 = working_v1 + working_v2
* working_v1 = working_v2
* working_v2 = working_v3
* 
* DISPLAY working_v3
*/


int main()
{
    unsigned long long max_val = 0, working_v1 = 1, working_v2 = 1, working_v3 = 2;

    cout << "Enter maximum positive integer for the Fibonacci sequence: ";
    cin >> max_val;
    cout << endl;

    if (max_val == 0)
        cout << "Not in sequence" << endl;
    else
    {
        cout << "1\n1" << endl;
        while (working_v3 < max_val)
        {
            cout << working_v3 << endl;
            working_v3 = working_v1 + working_v2;
            working_v1 = working_v2;
            working_v2 = working_v3;
        }
        cout << endl;
    }
    
    return (0);
}