CST116 C++

6.4 5a pg 126 #1

	1.
0
2
3
2
1

7.1 pg 148 #1-6

	1. The sign is reversed. it should be <=
	int_exp1 <= int_exp2
	2. There should be 2 equal signs
	int_exp1 == int_exp2
	3. ! should be on the other side
	int_exp1 != int_exp2
	4. Cant compare a string literal using relational quotes
	char_exp == 'A'
	5. This is correct
	6. Has to have int_exp1 (on each side of operator)
	int_exp1 < 2 && int_exp1 > -10

7.2 pg 155 #1

#include <iostream>
#include<math.h>
#include<iomanip>
#include <string>
using std::cout;
using std::endl;
using std::string;


int main()
{

	int money;
	int accounts;

	//take the number of accounts
	cout << "How many accounts do you have with us today?\n";
	std::cin >> accounts;

	//take the money amount
	cout << "How much money do you have in your account(s)?\n $";
	std::cin >> money;

	//if x>=25,000 is platinum
	//if 10,000<x<25,000 and 2 accounts is gold
	// if x>10,000 but only 1 account is silver
	//if x<=10,000 is copper

	if ((money >= 25000) & (accounts == 2)) {
		cout << "You are a Platinum member!";
	}
	else if ((money >= 25000) & (accounts == 1)) {
		cout << "You are a Platinum member!";
	}
	else if (((10000 < money) && (money < 25000)) & (accounts > 1)) {
		cout << "You are a Gold member!";
	}
	else if (((10000 < money) && (money < 25000)) & (accounts == 1)) {
		cout << "You are a Silver member";
	}
	else if ((money <= 10000) & (accounts == 2)) {
		cout << "You are a Copper member";
	}
	else if ((money <= 10000) & (accounts == 1)) {
		cout << "You are a Copper member";
	}
	return 0;
}

5b 7.4 pg 161 #1

#include <iostream>
#include <iomanip>

using std::endl;
using std::cout;

int main()
{

	int selection;  
	
	cout << "Student Grade program\n  -Main Menu-  \n\n1. Enter Name\n2. Enter test scores\n3. Display test scores\n9. Exit\n\nPlease enter your choice from the list above\n\n";  
	std::cin >> selection; 

	switch (selection)
	{
	case 1 :
		cout << "\n\nYour choice is: Enter Name?\n\n";
		break;
	case 2:
		cout << "\n\nYour choice is: Enter Test Scores?\n\n";
		break;
	case 3:
		cout << "\n\nYour choice is: Display Test Scores?\n\n";
		break;
	case 9:
		cout << "\n\nYour choice is: to Exit?\n\n";
		break;
	default:
		cout << "\n\nYour selection is invalid... Try again\n\n";
	}
}


5c 7.10 pg 168 #2

#include <iostream>
#include<iomanip>
#include <stdlib.h>
#include <thread>
#include <string>

using std::cout;
using std::endl;
using std::string;
int main()
{

    int loan;
    float interest{};
    float percent_interest;
    float sum_of_interest_and_fees;
    int fee;
    string response;
    string agreement;

    //agreement for margin of acceptance
    
    cout << "Just to let you know before we start, \nthe parameters for a loan is between $100 and $1000, \nand the parameters for interest rate is between 1% and 18%, \n\nis that okay?\ntype 'y' for yes and 'n' for no\n\n";

    std::cin >> agreement;

    if (agreement == "y")
    {
        cout << "\n\nWe will proceed with the questions, then...\n\n";
    }
    else if (agreement == "n")
    {
        cout << "\n\nThat is unfortunate, I cannot continue this transaction, sorry\n\n";
        return (0);
    }
    else
    {
        cout << "Invalid character, try this transaction again\n\n";
        return (0);
    }

    //enter the loan amount

    cout << "Enter the loan amount:\n\n";
    std::cin >> loan;

    if (loan >= 100 && loan <= 1000)
    {
        cout << "\nAccepted";
    }
    else if (loan <= 100 || loan >= 1000)
    {
        cout << "\n\nYou are not elegible for this loan, sorry.\n" << endl;
        return (0);
    }




    //enter the interest amount
    cout << "\n\nEnter the interest amount:\n\n";
    std::cin >> interest;

    if (interest >= 1 && interest <= 18)
    {
        cout << "\nAccepted";
    }
    else if (interest <= 1 || interest >= 18)
    {
        cout << "\n\nYou are not elegible for this loan, sorry.\n" << endl;
        return (0);
    }

    

    cout << "\n\nWe will now calculate your interest and fees";

    

    cout << "\n\n...";

    percent_interest = interest / 100;

    if (loan >= 100 && loan <= 500)
    {
        fee = 20;
    }
    else if (loan > 500)
    {
        fee = 25;
    }


    //calculate interest and fees

    sum_of_interest_and_fees = loan + (loan * percent_interest) + fee;

    cout << "\n\nHere is a summary of the calculations and data you have given us:";

    cout << "\n\nYou are asking for a loan of $" <<loan<< ",";

    cout << "\n\nYou have an interest rate of %" << interest << ",";

    cout << "\n\nSince you are borrowing $" << loan << ", there is a fee of $" << fee<< " added on";

    cout << "\n\nSo the sum of the interest and fees will bill you $" << sum_of_interest_and_fees;

    cout << "\n\nDoes this seem right?? Type 'y' for yes, and 'n' for no\n\n";

    std::cin >> response;

    if (response == "y")
    {
        cout << "\n\nThank you for your business.\n\n";
            return (0);
    }
    else if (response == "n")
    {
        cout << "\n\nWell that kind of sucks, I don't know what to tell you.\n\n";
        return (0);
    }
    else
    {
        cout << "\n\nInvalid character, try this transaction again\n\n";
        return (0);
    }
}

6a 6.5 pg 126-127 #1-5
	
1. a += 25;
2. b *= a * 2;
3. b += 1;
4. c %= 5
5. b /= a

8.2 pg 177 #1

1.

#include <iostream>
#include<iomanip>
#include <stdlib.h>
#include <thread>
#include <string>

using std::cout;
using std::endl;
using std::string;

int main()
{
	int count;
	int converted_to_even;
	bool even;
	bool odd;

	cout << "Input any number between 1 and 50:\n\n";
	std::cin >> count;

	if (count >= 1 && count <= 50)
	{
		cout << "\n\nCounting down the even numbers to 0:\n\n";
	}
	else
	{
		cout << "\n\nThis number is not a number between 1 and 50, try again.\n\n";
		return (0);
	}

	if (count % 2 == 1)
	{
		converted_to_even = count - 1;
	}
	else
	{
		converted_to_even = count;
	}
	
	while (converted_to_even >= 0)
	{
		cout << converted_to_even << endl;
		converted_to_even -= 2;
	}
}

8.3 pg 179 #1

1.

#include <iostream>
#include<iomanip>
#include <stdlib.h>
#include <thread>
#include <string>

using std::cout;
using std::endl;
using std::string;

int main()
{
	int count;
	int converted_to_even;


	cout << "Input any number between 1 and 50:\n\n";
	std::cin >> count;
		

	if (count >= 1 && count <= 50)
	{
		cout << "\n\nCounting down the even numbers to 0:\n\n";
	}
	else
		do {
		cout << "\n\nERROR, this number is not between 1 and 50, please enter a number between 1 and 50\n\n";
				std::cin >> count;
		}
	
		while (count > 50 || count < 1);
	

	if (count % 2 == 1)
	{
		converted_to_even = count - 1;
	}
	else
	{
		converted_to_even = count;
	}

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

6b 8.4 pg 184 #1

1.

#include <iostream>
#include<iomanip>
#include <stdlib.h>
#include <thread>
#include <string>

using std::cout;
using std::endl;
using std::string;
using namespace std;

int main()
{
	int n, i;
	float num[100], sum = 0.0, average;


	cout << "How many assignments do you have in one class?\n\n";
	cin >> n;

	for (i = 0; i < n; ++i)
	{
		cout << i + 1 << ". Enter Grade: ";
		cin >> num[i];
		sum += num[i];
	}

	average = sum / n;
	cout << "Your average for each assignment is: " << average << endl; 

	return 0;
}

6c 8.10 pg 192 #3

3.

#include <iostream>
#include<iomanip>
#include <stdlib.h>
#include <thread>
#include <string>

using std::cout;
using std::endl;
using std::string;
using namespace std;


int main()
{
	int n, t1 = 0, t2 = 1, next_term = 0;

	cout << "What is the number you want to count up to in Fibonacci's sequence?\n\n";
	cin >> n;

	cout << "Here is the sequence: " << t1 << ", " << t2 << ", ";

	next_term = t1 + t2;

	while (next_term <= n)
	{
		cout << next_term << ", ";
		t1 = t2;
		t2 = next_term;
		next_term = t1 + t2;
	}

return 0;
	
}